The tube Croft RIAA can be had within your budget. I always preferred tube phono preamps!
http://www.croftacoustics.co.uk/main.html
http://www.croftacoustics.co.uk/main.html
RIAA Phono
For those wanting the magic of the Croft sound but not in the market to replace their preamp, the RIAA Phono is available. It uses 3 x 12AX7 tubes, has a frequency response of 20 Hz - 20 kHz +/- 0.5 dB, sensitivity 2 mV for 0.5 V rms o/p. Input Impedance 47 kOhms and power consumption 13 W.