I bought 2 interior doors to replace my pocket sliding doors. My previous doors were just plain solid white and I wanted something a bit more "fancy", with glass and some design in the middle so that I can see through it. At A1 door's showroom in Surrey they have lots to choose from, and they have a lot of stock there so it's good to see it in person (as it looks different in a catalog). The sales was very helpful in describing how to replace the pocket door and what hardware I needed. And the price of the doors was cheaper than all other places.
While I was I also noticed that they had baseboards and crown moulding, so a few months later I purchased some crown molding, and these are ALOT cheaper than places like Rona or Home Depot.
This is a very professional store and they provide doors & mouldings to builders. If you look at a lot of new houses being built, after installing door frames they cover the doors with plastic sheet. You'll notice a lot of builders choose A1 by looking at those sheet coverings.