Okay, let me try this again. I'm looking for a bike at about $500, but I'm curious to know if there are any good places where any of you shop for used bikes or maybe good deals on new bikes. Also, how does one determine if a bike is suited for their height and weight? I'm assuming you'd have to ride the thing to really know, but what about for inexperienced people like myself? I know most of the good brands out there and I've read many of your recommendations, so I figure if I stick with a name brand that's within my budget I should be fine. Thanks.