Quote Originally Posted by kajero View Post
... I am pretty sure that's why they don't stock the smaller sizes. they don't want to mark them down to sell them.
That could happen with any size bike. My Look 566 is a really common size (medium/53cm) and it would probably still be sitting there unsold, last year's model on sale, if I hadn't bought it recently.
Some bike shops are selling on sites like eBay, I've noticed. For a person who does want an unusual size, at either end of the spectrum, it exposes them to a much wider range of choices, and the shop to a wider range of customers.