I take no real stake in these inflation calculators nowadays, as inflation has gone crazy since Covid, especially this past year with the Russia/Ukraine conflict being the top excuse for that. Last week for instance, my wife and I bought eggs for baking by the 1 1/2 dozen package for $3.69, which was previously $2.99 a few months ago and $1.99 pre-covid. That same carton of eggs today is now $5.09, so no "inflation calculator" can be taken seriously right now. Kit prices are where they are right now because they can be and we, as general hobbyists, are still buying them, although I'm not at regular retail.