You might be able to find a bike store item for around $500. I'd check out Novarra brand bikes at REI. Or see what kind of entry level offerings they have over at the Trek store. You'll also have to wait until a sale. Or, just go to Bikesdirect & get one mail order. If you're new to biking my advice would be to start off easy. Get a nice lightweight hybrid or fitness style bike with upright bars. Get used to riding before going all in on a hunched over 15lb carbon fiber speed bike.