Gem prices - please read

Hey guys, I have been very annoyed lately with price of the gems.

Mymain concern being the fact that there should be a package that costs 30 dollars. At the moment you can only buy 21 and 52 .(there are others but I don't care about them.) because my dad won't let me use his credit card i have to buy iTunes cards that come in increments of ten. Which basically means those extra 1 dollars on those packages cost me 9 dollars worth extra of iTunes money.

Im not stupid so I know that this is done on purpose but I can assure you that alot more people will buy gems if you make them exact to the nearest 10 .

thanks guys.

Apple sets prices.

no they don't