You could check out the EAA Witness or Witness Compact in 10mm auto.
There's also the Glock 20 and 29. They're all more reasonably priced 10mm autos.
Kimber makes some 10mm autos in the Custom II (Stainless Target II 10mm) and the Eclipse Custom II 10mm. There's the Colt Delta Elite 10mm auto too. With both brands, you're probably getting out of the price range you're interested in.
Dan Wesson and Wilson Combat also make 10mm autos, but they're probably the most expensive.