economical

adjective

1 it is a very economical little car:

cheap, inexpensive, low-cost, low-price, low-budget, budget, economy, reasonable, reasonably priced, cut-price, cut-rate, discount, discounted, bargain, bargain-basement, cost-effective, effective, efficient, energy-efficient, fuel-efficient, energy-saving, fuel-saving.

▷antonyms expensive.

2 my friend is a very economical shopper with a keen eye for a bargain:

thrifty, careful (with money), provident, prudent, canny, sensible, frugal, sparing, scrimping, economizing, abstemious;

North American forehanded.

▷antonyms spendthrift.

economical Oxford Dictionary of English