You can usually always get a steal with 2nd hand bikes. find out what cycling clubs are in your area and find their websites. Ive found most club websites have some form of classifieds section. Not only do you get everyone else getting rid of their entry level bikes to pay for their new pimped DI2 machines, most of the bikes are quality bikes that have been used for club racing so your not going to get a kmart bike or the like. and for a double wammy you can start learning about the cycling clubs culture, 'newbie days', 'development programs' and overall, more helpful info you would need to get into cycling.