$300 - $600 probably at that output.
They are hard to find at any output for under $1000. But there are a few. It's more a matter of finding one for sale that isn't new, straight from the factory that makes it difficult.
I have a 4+mw I bought from Laser Sam - Not cheap.
If you are very patient and look carefully:
Greens you can pick up for $100+
Yellows I've seen go from less than $100 on up to typical $200-300
Orange - First one I was offered was $300 plus (low power)
When I didn't get it, someone else grabbed it right away.
That's my .02 - YMMV