For $150 it's probably a magnetic ballast, from what I've seen browsing ebay for em. Yeah they have the rebuild kits for less than $50, sometimes like $20 so you can swap out a part & test it if you're any good at that kind of stuff.

Also if it's a mag ballast at that price, it's most likely not switchable so unless one of the bulbs is a conversion bulb it's not going to work with both...Did they send you both in a kit?