What is your definition of small?
OMAX (The company I work for) has a 2 small machines: One with a table area of 26' by 52', and and an even smaller one with a table area of 26' x 26'. I'm not is sales, so I don't know the exact prices, but You can purchase a complete turn-key 26'x26' system for somewhere in the $80,000-$90,000 range. Larger tables, of course, cost more.
('Turn Key' means: Table + Controller + Software + Pump + Instalation + Training + Some abrasive to get started + a few spare parts, etc.)
Go to:
http://www.omax.com
or
http://www.omax.com/2626_Specs.html
for details.
- Carl.