trade down
phrasal verb with trade verb uk/treɪd/ us
COMMERCE, ECONOMICS
to spend less money when you buy things than you did before:
Economists predict that shoppers will trade down this season, bypassing full-price stores to save money at bargain chains.
COMMERCE
to buy something, usually a house or car, that is of a lower value than the one you already have:
You only gain if you own residential property as an investment or you are anticipating trading down.
trade down to sth I'm trading down to a cheaper model.