used keg equipment.. What to look out for?

I found a guy with some used restaurant supply stuff.

It sounded like he may have CO2 tank and/or regulator and possibly some perlick taps. He had a big 4 keg commercial unit but it was too much and not what I was looking for.

What should I look for?

I think he wanted 20.00 for the CO2 tank and the same for the taps. Not sure about the regulator or if he had one. I could see the bottle being out of date and paying a bigger fee to fill it the first time. What should I look for in taps or the regulator?

Thanks

bump, Should I look at any of this equipment or hold out for something else..?

If they are perlick taps, can they be rebuilt or will they just need cleaning?

I have an idea what the tank and regulator would be worth.

Thanks

I'd buy it.

Look for a stamped date on the side of the CO2 tank.