So it's been a while, and I've checked out a few thrift stores with little success.
I found this CPS 1500:
Yeap, that's totally fake. I already have one sort of/exactly like this, except it's actually grey, not yellow.
Then I went to Talize yesterday. The first thing I found was this:
A WW Lightning for 5.99. I ignored it and searched the rest of the crowded shelves.
And that's when I found this, buried under some other toys:
A freaking CPS 1700 for 5.99. In working condition. For 6$. Yep.
The Lightning was in good working order as well, and any sort of CPS technology for 6 bucks is a good deal. So I bought them both!
I tested both guns today and they perform well. The 1700 has a loose pump seal but that's easy to fix, must have done it ten times by now. It also has pretty bad lamination, the shots on 10X were really rough and flattened instead of a smooth beam. It's got plenty of kick though, I don't know who donated this but it's one of the nicer CPS 1700's I have found.