Just yesterday i picked off a sweet deal from our local Craigslist. Pristine Simington Premier windows all were 20 wide by 30 tall single hung windows. These were slightly smaller than standard a they were salesman's samples. They actually have a little carrying case and stand built into them for display at trade shows. The cases will be removed and repurposed perhaps as a small display case for small wares at the flea market shows. These sample windows are a great size for a tiny as they fit great in a shell framed at 24" o/c with little extra framing. They retail at about $175 dollar per windows ! The best part is that I paid $20.00 each. Often these display samples can be found by simply asking a lumberyard or window replacement company. This is about the 4th time I have found this type of window source.
Here is where they are going.....
Low E and argon filled single hung salesmans samples