Actually the drawers that fit the 12"D cabinets are only about 9" deep.

Lots of places sell drawer glides. I don't think anyone comes close to IKEA's price for the nice Blum ones though. The less expensive non-full extension glides may be your best bet. Actual drawers that fit will be much harder to find, might be easier to make your own.
Kathy (kmcg) has slide out shelves for shoes that are on hardware store glides. picture here:
pull-out clothes closet from pull out pantry
I read about someone here using
Shelves that Slide but I can't locate the thread.
With some creativity I think it can be done.
Best wishes,
Gloria