I remember pal.
A FAC rapid is worth tosh. That goes for any FAC air rifle.
It doesn't matter which basement tuner has done their magic to it. There's a limited market.
Sometimes it beats me why sub 12 Rapids and parts make the money they do.
There was a TTR advertised not so long back for a grand.
After a 5 hr round trip by a mate it was proved it was a MK1 copy. The gun shop did sell it for the asking price. False advertising. Pure ignorance or a pure delight for what the buyer saw? It wasn't what it said on the tin.
Once it's on ticket there's no going back.