Reply to "Owners Clubs"

First, don't confuse U.S prices with European prices. Only about 50 or so GT5-S Panteras were ever imported to the United States and most of those were imported by Amerisport with no engines & legally finished by that company. Only a very few were privately imported, smog-legalized and are licensed to drive here. In Europe, the situation was considerably simpler and the prices often reflect this, but the model remains a rare item world-wide especially right-hand-drive models, and especially if in good shape and rust-free (all Panteras were all-steel construction and suffered the usual rust-bugs unless well cared for.)
Another factor is, the car went out of production in the late '80s, the founder died earlier this year and DeTomaso Automobili is now in liquidation (meeting in Modena next week to determine the fate of the remains), so prices are likely to be "unstable" for a while. I suggest you attend if possible just for the exposure. Many Euro members will be there, as well.

I also suggest you join a local club; the DeTomaso Drivers Club of the U.K, the Swedish DeTomaso Owners club, or the German DeTomaso Owners Club come to mind. In the U.S, there are the Pantera Owners Club of America (POCA) and Pantera International (P.I.). Joining one or more of these will not only acquaint you with local activities & educate you to the good & bad points of the car through their newsletters & tech sessions, but in most cases, when a car becomes available for sale, members will know of it before the general public, and may even be familiar with the machine. Attempting to do this all alone and in a hurry can be frustrating and expensive unless you are very lucky. Don't give up... this forum is a valuable resource as you've already found. Welcome to the family.