For $175 (this is assuming there is no shipping or driving very far to get it, involved) I would go for it. I have an 8-ohm B212 and it's a very nice cab. Can't compete with my fEarful 15/6, but then again, what can?
Now, if you're looking at this purely as an investment with the intent to just "flip it" you might be disappointed. Resale value on Avatar cabs is on the low side, unless you wind up with the perfect set of circumstances on your side. I.E. you live in a location where the cost of shipping there is very high and there is a dearth of used gear stores.
Bottom Line: Nice cab if you intend on actually using it yourself. Not a good investment from a resale POV.