Greg,
as rare as these parts are getting now (really rare)
I wasn’t able to find a window myself, and I wasn’t going to get one shipped over from Europe, so my only option was going to be to hunt for a complete tailgate, which I couldn’t find. Personally, I reckon you’re too cheap on the tailgates, if someone gets rear-ended and or needs a window, they won’t be able to easily find one so it will be a sellers market for those that have spares.
I believe you should be asking double that (for the 1990-1993 tailgate) because they’re basically unobtanium, but it’s your choice, that’s my 2c