dude, get to your nearest walmart
http://www.walmart.com/catalog/produ...uct_id=5238216
$124.
I don't think this price can be beat from any online retailer and then after shipping etc etc.
just go here, pick it up, take it home, inflate the tires to max pressure and practice folding and unfolding a few times so you don't get embarassed in public!
good luck!