In reply to Ed Brighteldman: I wanted a Road Bike once I had got to a general level of fitness about 2 years ago. Not had one for many years, so popped into a bike shop to try a few out for fit / size. Decided which one I felt right on. They offered a discount on extras but the bike alone was £730. (Not top end obviously but about right for what I wanted) Wanting to think about it a little I went home and checked out Ebay finding the same bike one spec lower then at £185 brand new from a bike shop (same frame & brakes etc, but lower rated drive chain). On the basis we all upgrade bits from time to time ended up buying the one on Ebay (eventually for £320).
Not needed to upgrade anything yet.
Shoes Helmet Computer and pedals I spent about £180 on on top and I'm pretty happy with what I ended up with.
For a Roadie I'd go for new, but now looking at Mountain Bikes and think Secondhand on Ebay would be fine for them. (I'm not to bad for tinkering on them myself)