There's no need to aim as low as a Koroll unless you want poor quality alround. My 3 ($4.80) Nettar is the better coated Novar f4.5 in a Prontor 1-1/200 shutter that Nicholas refers to above.

Ironically my next door neighbour's daughter wants to buy a similar camera in this price range, I'm certain she won't have a problem but remember people look when they are out and about anywat rather than spending time specifically shopping for bargain cameras.