Haha chill out!

Amazon have a 30 day price drop guarantee

, in that if it drops in price within the month you purchased, they will refund the difference.
'If you want to check if any of your purchases are eligible for a refund, just follow these simple steps:
1. Visit Your Account and look at all invoices from the past thirty days.
2. Click on the item names to pull up the current item description/price and compare to the price that you paid.
3. If you paid more than the current price, copy down the order number and go to the Return and Refunds Contact Form page.
4. Select Refund Inquiry as your subject, and check off the order(s) of interest. If you dont see the order in question listed, enter the order number in the Other field.
5. State in the comments that the price dropped, and that you want to be credited for the difference. It might help to mention the item name as well as old and new price, but Im not sure that this is necessary.'
That sounds complicated but once you get the hang of it it's VERY easy. I've claimed back pounds and pennies before!