I liked the BECMI Companion rules (the C in BECMI) notion of a separate amount of Dominion Money( I forget what it was called), but basically it was denominated in G.P. but was an abstraction of "economic service". You used it to pay for the Castle Contruction and upkeep, the staff, and other such things. It represented both literal gold pieces, but also the service of the peasants who sought your protection in a feudal-like arrangement. It wasn't gold so much as a golds worth of "stuff".
The "Tier" approach to wealth is probably the easiest baseline though: Coppers for the Poor, Silver for the Middle-class (burghers, merchants, etc), Gold for the Nobility, and perhaps Platinum for the Nation if you want to go that far. Thus "most" mundane stuff is in the 1-50cp range like a shovel, most specialty stuff is in the 1-50sp range like a wagon, and most luxury stuff is in the 1-50gp range like seats at the opera, and most National stuff is in the 1-50pp like a small keep.
(85cp is 0.85 sp or 1 sp if you round up, thus the ranges stop at 50 for ease)
The "Tier" approach to wealth is probably the easiest baseline though: Coppers for the Poor, Silver for the Middle-class (burghers, merchants, etc), Gold for the Nobility, and perhaps Platinum for the Nation if you want to go that far. Thus "most" mundane stuff is in the 1-50cp range like a shovel, most specialty stuff is in the 1-50sp range like a wagon, and most luxury stuff is in the 1-50gp range like seats at the opera, and most National stuff is in the 1-50pp like a small keep.
(85cp is 0.85 sp or 1 sp if you round up, thus the ranges stop at 50 for ease)