sumptuary

a. [ L. sumptuarius, fr. sumptus expense, cost, fr. sumere, sumptum, to take, use, spend; sub under + emere to take, buy: cf. F. somptuaire. See Redeem. ] Relating to expense; regulating expense or expenditure. Bacon. [ 1913 Webster ]

Sumptuary laws or
Sumptuary regulations, laws intended to restrain or limit the expenditure of citizens in apparel, food, furniture, etc.; laws which regulate the prices of commodities and the wages of labor; laws which forbid or restrict the use of certain articles, as of luxurious apparel. [ 1913 Webster ]