What's a cheap iPhone 5 compatible printer?

I don't want to print color or pictures I just want it for printing ebay receipts. Nothing just simple mailing address/receipt. Things from ebay. It has to have Wi-Fi or Bluetooth I don't want to have to plug my iphone 5 Into anything. Also to person who gives me a good answer for a cheap printer I will send them 2$ via paypal for there answer. Answer should be a good descriptive answer my price range is like $30-$70

If you want to print from an iphone, you need an airprint compatible printer. I doubt you'll find one for $70 and certainly not for $30. A good one is the epson workforce 845 but that's over $100. You also have to take the cost of ink into account. Cheaper printer use expensive ink. The printer companies have to make money somewhere. So if you find that $30 printer and it uses $50 cartridges, you were better off buying a $100 printer which uses $10 cartridges.
Epson wins for best price/feature comparison, best warranty and lowest cost of ink. You can't beat their warranty. If anything goes wrong, they will fedex a replacement and pick up the old one at their expense. You can get ink for under 50 cents a cartridge at www.ccs-digital.com. You pay under 2.50 for reusable cartridges and then get $2 back for the empties. Or you can buy refillables (which is what I'm using now) and refill yourself for pennies.

I don't need your $2. Spend it on a better printer.