Dollars aren't pounds. And as regards your argument that "nobody even knows if the product will be any good," that's kickstarting. You are always taking a gamble: in some cases nothing will materialise. In others the results might not be all you desire. So if you're risk averse then just wait until the product ships and read the reviews.
As to the price, it strikes me as pretty reasonable for the very substantial rulebooks that they talked about. The D&D core rulebooks come to just over £0.08 per page if bought in a discounted bundle while the Traveller 5e version, which is going to be more than 2,000 pages long(!) comes to £0.13 per page.
Given that WotC have the biggest economies of scale in the marketplace, that they don't have to pay a rights-holder, and that they are now discounted versus launch due to amortisation over the last two years, the pricing seems entirely fine. I'm afraid that this is 2026, with huge uncertainty in printing costs, tariffs etc as well as several years of substantial inflation.Things just cost more than they used to.