lol... I understand $69.99 is not a "regional pricing" but isn't it close to most AAA game standard prices on launch ($60)? It may be even more these days for some publishers I think. I've seen plenty of Indian folks pre-ordering Baldurs Gate 3, EA Battlefield games at full price and higher editions (some in TDF group too).
The base edition of D4 is simply good enough if one doesn't care about cosmetics. Considering the enormous amount of replayability value and one-time purchase, D4 should be worth it. It will be even better on some discounted sale after one year if people can wait (-10% or -20% usually, can't predict).
In my defense, in 10 years of "purchasing" games - I only pre-ordered Diablo games at full price.