Within that range you can get at least any of the 1st generation amps:
MC250
MC2505 (metered version of the 250)
MC2100
MC2105 (metered verion of the 2100)
Possibly MC2205 also.
Depending on speakers and where you plan to go with the system you may want to start say with the 250 and look for say a MX112 or 113 tuner preamp to get into a set of all Mc electronics. I used my 250 for almost 30 years as my main amp and it will handle almost any speaker you're likely to encounter. The 2100 will handle the rest.
For a really nice system on the cheap, look for the MX113 with the MC2505 with the cabinets and a set of original Advents with the masonite ringed woofers if you are into classical and jazz. For rock, swap the Advents for a set of Klipsch Heresy.