I’d guess the exchange rate has an influence on price, or at least a hedge against the exchange rate moving more significantly than it has on the part of VW.
Having bought a TCR I’m clearly biased but comparing it solely on price with an R or GTI PP I think is missing the point. It’s a very different car to both of them and for me has a fairly unique appeal that justified my paying more than an equally specified R would have run to. To be fair it was almost impossible to get any significant discount on a three door of any flavour when I ordered so a bit apples and pears perhaps but I’m still beyond happy that I went with the TCR