The current exchange rate for that is about 380 AD for 1 zen so for 4k its about 1.5 mil..I wouldnt pay that price if it was In game money only, The price is still the same ur just changing the currency which doesnt solve the original problem.
I didnt say RP is impossible I just want to enhance it, Alot of the problems in game break immersion, I wasnt complaining about RP i was merely making suggestions.