Looking to buy a bike. I found this one on ebay. I 5 2 tall and was wondering if this is a decent bike to bid for as a first time bike buyer. I just recently got into the sport of riding and wold really like to find a bike, as I am borrowing a bike right now that is way too big. Any advice as to what I should be looking for? I went and got sized for a bike as was told a good fit would be approx; 48 - 52 cm the more I look around the more confused I am getting!!! please help