Amazon has given Kindle Fire owners a FREE $5 credit to use in their Appstore.
While the fine print does say “any new Kindle owner”, I have had my Kindle since they came out and had $5 in my account to spend. My youngest has been dying for “Cut The Rope” – so I think that will be the first purchase.
You’ll notice that it gives the option of using coins instead of currency. Also, you can purchase coins at a reduced rate.
Pricing was current when the post was published, however Amazon prices change often, so please check before you buy.