Cabinet Hardware(pulls & knobs) Makeover = $1.50+ for each piece
Cabinet Refacing = $110-$200 linear foot material only
Cabinet Remodel = $120-$400 linear foot material depending on style and company.
As a kitchen designer at a big box store, I've ran the numbers for customers before. Every single time the cabinet refacing is cheaper, but in most cases the overall difference has been between $300-$1200 dollars.
The best option would be to go into a store. The universal kitchen is a 10x10 = 20LF and that can give you an idea of what cost would be on the doorstyle you personally like.
Important Questions/Things to Look for:
Solid Raised Door vs. Veneer Rasied
Cabinet Box construction(MDF) vs. APC(All Plywood Construction)
Dovetail Drawers vs. Stapled boxes... more