I have that exact kit from the same auction seller. See my grow thread for what two of them look like installed. They work just fine. One arrived with shipping damage that caused a bulb to shatter, but they replaced it within 2 days of me asking them. Very good service.
Sadly, the ballast they supply isnt the best because it causes a lot of RF interference. This caused problems at home with DSL line disconnects, Nutradip Tri-Meter being inaccurate, and no radio stations in the house.
Too much of this interference, and you could affect your NEIGHBORS SERVICE TOO. I'm upgrading from 2x1kw lamps from there to 6 total, but the other 4 will be a better ballast and lamp and reflector setup. I shouldnt have tried to go cheap and save money here, for an extra $100 you can get so much better, and lets face it with 1kw lamps an extra $100 is a good investment for the 2.2 Lbs / 60 days you can achieve with it.
In order to fix the digital ballasts RF Interference, you can wrap it in aluminum foil for the quick fix, and then use a shielded cable (or wrap cable in alumninum foil too).
Please note too, this isnt an "issue" with my ballasts, it's common on most digital ballasts, and I personally confirm with actual experience that THIS one DOES.