3) I am going to take a guess that it is just the direct translation (クロムモリ>kuromori) from Japanese due to the fact that it is a katakana based word.

As far as bicycles on the cheaper side go, you have a few options. The cheapest option as far as I know of is Tokyo Bike. I have see a few of them every once in a while.

A bit more expensive, but probably a slightly higher build quality are the Fuji track bikes.

If you do not mind non-domestic brands Cycle Spot has Bianchi Pistas for a decent price.

The final option would be hitting up Cycly, a second hand bicycle/parts chain shop. They have stores throughout the Tokyo area and lots of Japanese 'used' goods are almost in fairly new condition half the time.

Hope that helps you out some