I am thinking of buying a reasaonably hardy bike to ride to and from work everyday Half the time I will be on the road and another half on pavement to avoid crazy drivers My budget is $500 maximum. Where can I get a good bicycle at this price and where can I find a dealer who will help me adjust a good fit. I havent been riding since I was a child but now I think with cost of living so high I want to cut costs Thanks