Haha, I doubt you'll find anyone to take you up on that offer
If you get yourself a t-52 pig, I'd imagine it will cost you $40-50 at the least- no way in hellz someone is going to trade a relatively easy to find Feral Flying Pig for a no-longer-produced, HTF t-52 pig.
I know a couple people who have them. Personally, the no.9 pig was better but that's my taste. Those that do still have them aren't giving them up any time soon. If they ever do, it would have to be for some serious cash or an equally HTF stick. Sorry to break the bad news to you.
Also, they aren't worth the $50 people are paying for IMO. Age a no. 9 or t-52 robusto and you'll get damn near the same experience. I had some t52 robusto that had about 5 years on them and they are magical. Plus, they were $13ish/stick, not $50.
If it's the hunt to get all of the pigs aside from the Feral pig, t52 pig, no.9 pig, undercrown pig, there is also:
Bashert Pig (Feral size, no.9 blend)
T52 Feral Pig (T52 blend, Feral size)
FFP Pig (has FFP instead of Feral on the band)
Edit: Found this quick vid on the Bashert.