I got all that gear last year for around $300-$350 (my filter housing is original, unpainted). Agree, the hard bit is getting the filter housing! That was the only reason I needed a second set (paid $300 for a set years ago without the housing).
I've said on here before, I only ever bid at the last second on eBay and bid as much as I'm willing to pay. If I lose, the other person paid more than I was willing to.