Spindle

Anyone know of a company that makes small milling machine head or
spindle that is sold by itself?
I have a CNC router and I would ocassionally like to swap spindles since
the router turns about
25,000 rpm. This would allow me to do some light milling with my
machine. A $3000.00 Colombo
spindle is not an option. Something in the line of a couple hundred
bucks is what I was thinking.


Thanks
Bill