Have you called some LBS in your area?
I have a 94 GT that had integrated shift/canti levers. I use this bike for rail trails/commuting now and wanted V's because, well, cantis blow.
I got Shimano 7 speed pods for $35 at one of my LBS, in stock. My LBS even had integrated units for $35. I opted to separate the brake & shifter. I found them for ~$25-$29 online, add $7-$10 shipping. I also picked up Avid brake levers for $20. Done deal, mounted those two with the V Brake take offs I already had and now have v brakes on an old GT. Oh, and it actually stops now unlike before. I guess once you get used to discs, canti's just don't cut it anymore.
Call around locally, lots of shops still have 7 speed shift pods available and after shipping, they are about the same cost as ordering online.