I have the following for sale:
2 x 250 watt Venture Opti-Wave Pulse Start Magnetic Ballasts
M138/M153 Part #V90D8410 - multi tap 110/208/240/277 VAC
Complete with 15uF Capacitors and BVS041 Ignitors
Datasheet for them can be found at http://www.venturelighting.com/VLPS/BallastDataSheets/PSMH/V90D8410.pdf
Advance ballast cross reference part #71A5792
$75 for the pair + $25 for shipping.