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	<title>Comments on: Gaming gift card bonuses &#8211; a math excursion</title>
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	<link>http://mindyourdecisions.com/blog/2010/04/06/gaming-gift-card-bonuses-a-math-excursion/</link>
	<description>Articles on game theory and personal finance</description>
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		<title>By: Adnan</title>
		<link>http://mindyourdecisions.com/blog/2010/04/06/gaming-gift-card-bonuses-a-math-excursion/comment-page-1/#comment-6477</link>
		<dc:creator>Adnan</dc:creator>
		<pubDate>Fri, 16 Apr 2010 13:39:54 +0000</pubDate>
		<guid isPermaLink="false">http://mindyourdecisions.com/blog/?p=2204#comment-6477</guid>
		<description>Sweet! I did the math before scrolling down and got it. I forgot how much I miss doing problems like these. Too bad I wouldn&#039;t have use for so many gift cards from a single place.

You would think that the store would want people to know this trick considering how much revenue it would generate. For this example, you essentially get 25% off when buying the gift cards in bulk if I&#039;m doing this correctly. So say you bought a 100 $50 gift cards ($6000 purchasing power) that had a non-expiration clause (must have a lot of friends):

That&#039;s still $37.5 revenue per gift card x 100 cards = 3,750 in revenue from just one person as opposed to if 100 different people bought one each. They would make $5,000. The cards cost the company $6,000 to honor, so they lose a net $1,250 comparatively, but that cost is offset by three things:

1) Guaranteed money rather than potential money from people who may or may not buy cards. Same principle as buying from Costco or Sam&#039;s Club.

2) Many people forget to use their gift cards. Even without expiration, the store just made money for nothing. I&#039;m not sure how this works for everyone as I read somewhere that they may not count towards revenue until the card is used, but maybe you know/can find out.

3) When people go to buy something with a gift card, they may buy other items while there, buy an item of greater value than the card and use the card to offset the cost, or both. Example, I bought an item from Target that I wanted but didn&#039;t buy it until I got a gift card to offset the price. It&#039;s all the same to Target whether my friend or paid for it.

I guess the rules of this may change with online use of the gift card, or it could lead to more impulse purchases. I might buy an item with the gift card then bundle the shipping with something else that I had wanted or had impulsively purchased.

:-( My head hurts. There&#039;s too much game theory with something as seemingly simple as gift cards. Let me know if I made any errors. Great post.</description>
		<content:encoded><![CDATA[<p>Sweet! I did the math before scrolling down and got it. I forgot how much I miss doing problems like these. Too bad I wouldn&#8217;t have use for so many gift cards from a single place.</p>
<p>You would think that the store would want people to know this trick considering how much revenue it would generate. For this example, you essentially get 25% off when buying the gift cards in bulk if I&#8217;m doing this correctly. So say you bought a 100 $50 gift cards ($6000 purchasing power) that had a non-expiration clause (must have a lot of friends):</p>
<p>That&#8217;s still $37.5 revenue per gift card x 100 cards = 3,750 in revenue from just one person as opposed to if 100 different people bought one each. They would make $5,000. The cards cost the company $6,000 to honor, so they lose a net $1,250 comparatively, but that cost is offset by three things:</p>
<p>1) Guaranteed money rather than potential money from people who may or may not buy cards. Same principle as buying from Costco or Sam&#8217;s Club.</p>
<p>2) Many people forget to use their gift cards. Even without expiration, the store just made money for nothing. I&#8217;m not sure how this works for everyone as I read somewhere that they may not count towards revenue until the card is used, but maybe you know/can find out.</p>
<p>3) When people go to buy something with a gift card, they may buy other items while there, buy an item of greater value than the card and use the card to offset the cost, or both. Example, I bought an item from Target that I wanted but didn&#8217;t buy it until I got a gift card to offset the price. It&#8217;s all the same to Target whether my friend or paid for it.</p>
<p>I guess the rules of this may change with online use of the gift card, or it could lead to more impulse purchases. I might buy an item with the gift card then bundle the shipping with something else that I had wanted or had impulsively purchased.</p>
<p> <img src='http://mindyourdecisions.com/blog/wp-includes/images/smilies/icon_sad.gif' alt=':-(' class='wp-smiley' />  My head hurts. There&#8217;s too much game theory with something as seemingly simple as gift cards. Let me know if I made any errors. Great post.</p>
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		<title>By: SheffieldSteel</title>
		<link>http://mindyourdecisions.com/blog/2010/04/06/gaming-gift-card-bonuses-a-math-excursion/comment-page-1/#comment-6468</link>
		<dc:creator>SheffieldSteel</dc:creator>
		<pubDate>Wed, 07 Apr 2010 16:23:33 +0000</pubDate>
		<guid isPermaLink="false">http://mindyourdecisions.com/blog/?p=2204#comment-6468</guid>
		<description>If you value a gift card the same as money, then your bonus is 20% every time you buy a gift card. It doesn&#039;t matter whether you buy a gift card with a gift card, cash, or a combination, since you value them both equally. Every card costs 50 and nets you a $10 bonus card.

Of course, you shouldn&#039;t value them both equally. The store certainly doesn&#039;t, which is why it is encouraging you to buy gift cards.</description>
		<content:encoded><![CDATA[<p>If you value a gift card the same as money, then your bonus is 20% every time you buy a gift card. It doesn&#8217;t matter whether you buy a gift card with a gift card, cash, or a combination, since you value them both equally. Every card costs 50 and nets you a $10 bonus card.</p>
<p>Of course, you shouldn&#8217;t value them both equally. The store certainly doesn&#8217;t, which is why it is encouraging you to buy gift cards.</p>
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		<title>By: Chris</title>
		<link>http://mindyourdecisions.com/blog/2010/04/06/gaming-gift-card-bonuses-a-math-excursion/comment-page-1/#comment-6466</link>
		<dc:creator>Chris</dc:creator>
		<pubDate>Wed, 07 Apr 2010 02:17:15 +0000</pubDate>
		<guid isPermaLink="false">http://mindyourdecisions.com/blog/?p=2204#comment-6466</guid>
		<description>Small technical error:
In your final equation the limit should be 1/(1-P).  It doesn&#039;t change the conclusion though.
Another good article, thanks for sharing.</description>
		<content:encoded><![CDATA[<p>Small technical error:<br />
In your final equation the limit should be 1/(1-P).  It doesn&#8217;t change the conclusion though.<br />
Another good article, thanks for sharing.</p>
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		<title>By: Benjamin</title>
		<link>http://mindyourdecisions.com/blog/2010/04/06/gaming-gift-card-bonuses-a-math-excursion/comment-page-1/#comment-6465</link>
		<dc:creator>Benjamin</dc:creator>
		<pubDate>Tue, 06 Apr 2010 20:10:03 +0000</pubDate>
		<guid isPermaLink="false">http://mindyourdecisions.com/blog/?p=2204#comment-6465</guid>
		<description>Hi,
On a related topic: Beware the tricky fees on gift cards

http://moneycentral.msn.com/content/savinganddebt/consumeractionguide/p66191.asp</description>
		<content:encoded><![CDATA[<p>Hi,<br />
On a related topic: Beware the tricky fees on gift cards</p>
<p><a href="http://moneycentral.msn.com/content/savinganddebt/consumeractionguide/p66191.asp" rel="nofollow">http://moneycentral.msn.com/content/savinganddebt/consumeractionguide/p66191.asp</a></p>
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		<title>By: Paul</title>
		<link>http://mindyourdecisions.com/blog/2010/04/06/gaming-gift-card-bonuses-a-math-excursion/comment-page-1/#comment-6464</link>
		<dc:creator>Paul</dc:creator>
		<pubDate>Tue, 06 Apr 2010 19:43:05 +0000</pubDate>
		<guid isPermaLink="false">http://mindyourdecisions.com/blog/?p=2204#comment-6464</guid>
		<description>Arun, that&#039;s what I was thinking. Just keep getting $10 an infinite amount of times off of $50. The fifth time, your initial $50 would pay for itself.</description>
		<content:encoded><![CDATA[<p>Arun, that&#8217;s what I was thinking. Just keep getting $10 an infinite amount of times off of $50. The fifth time, your initial $50 would pay for itself.</p>
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