You'll have to give up Soul Matching the initial armors eventually, as repeated Soul Matching of the same object makes the prices skyrocket after a while. In general, Soul Matching a single item more than 3 times is lunacy.is it better to forge an armor or soulmatch it, at least in my case i wanna use the Nioh Set from the pre-order dlc which is level 6, i love the close combat bonuses so that's why i went Shimazu claninstead of that clan with 10% gold/amrita(and the tv series Drifters lol)
The end game Divine tier items are free of this though, but they are a bit different from all the others.