Brocock 1873 cattleman

Just found 3 decent brocock 1873 revolvers at qxf few days ago... A venerate chingtold me tey re  the most sought item in the airgun world but the Price  rocketed to 23000 compared to 4 digit price when they were first available Just wonder if they are fairly priced n if they worth the money... can ching gimme some advice? Thx