Thanks, interesting idea that I will need to keep in mind! I have just bypassed mountain bikes I have seen advertised thinking I don't want those type of tires but if it is a quality brand bike, maybe? My bigger concern is knowing whether a better quality bike is authentic and whether it has the original, comparable or better components on it such as derailer, brakes, etc. Not sure the best way to know if I buy from an independent party which is probably another reason to look at a reputable dealer.