I have to agree with Eugene--I'm not wild about the idea of a plastic coffee pot. Certainly not for daily use.
I wasn't as conscious of plastic dangers like BPA, etc when I got the first Poly Perk (probably late 1990s). Plus, I had no intention of actually using it much--it was a toy to play with. I tried it a few times, and that was pretty much it. It did come in handy once, though. I was snowed in, and (shudder!) ran out of coffee. I had some coffee that I'd bought, but never finished off (didn't like it). I used it in the Poly Perk. It wasn't good coffee, but it was the best I could do, and the Poly Perk was different than usual.
These days, I view these as collectible type items. As I commented, I think of trying the four cup Poly Perk again. But as I think of it, I think to myself that I probably did give it a fairly fair chance years back. I didn't take percolators seriously back then. (Even now, I wouldn't say they make the best coffee. But my experience has shown me that percolators aren't necessarily going to make undrinkably bad coffee. A good percolator turns out coffee that's much better than lousy drip.) But I know I would have made coffee with some care, and certainly would have used decent coffee. (Excepting the one time I mentioned above when I ran out.)