What are some cheap purchases (<$2USD) available now?

... Fortix.

Yeah fortix

Go to groupees and buy their build a bundle

Just get one of them bundles, really.

Waveform is on sale as GMG. It's a great puzzle-y action-y casual-y game that's pretty unique.

http://www.greenmangaming.com/s/ca/en/pc/games/action/waveform/

Either the Groupees bundle, the new Humble or the current Indie Game Stand are good deals.

Has Fortix been said already?

If not Fortix. Although you should not buy it. You have to win it

2 fortixes

Go find some bundle sites

CoD BO2...oh wait. Just buy a DLC and give it away lol

I'll leave others to give you suggestions. I'd just have to wonder what sort of crazy bank account incurs fees for not having the requisite number of transactions per month.
Does the number vary month to month just to make things interesting? Does it pay out instead if you reached double or triple the amount required?
I've heard of bonuses for zero withdrawing transactions, but never one that encouraged such transactions.

you can buy rochard or trine with autumnseal coupon

You might find some inspiration here.

Happy shopping :D

humble bundle

IndieGameStand has Serious Sam: The Random Encounters for a buck

if it just based on transaction you can always send me a penny lolz

IG X BTA