They're only going up in price. I was hoping by now, someone would have started repopping them. Your best bet is to find a car that already has them, swap the seats, then sell the car. Sounds crazy but probably the cheapest route. Also, keep in mind the fact that the oem fabric was terrible. They almost always need reupholstered. Last I checked, the upholstery kit was around a grand and they won't fit correctly unless you also buy the new foam sets (another $400 maybe?) I also paid a shop to do the work and they charged $600. You can diy it, but they're not exactly easy to do. I was in it for a little over $2k and I'm working on another pace car now, so double that lol!
On a related note, I found a company that sells nylon netting that matches the headrest. If you come across a set and the headrest need restored, shoot me a pm. I have some extra you can have.