thriftier
adj. 节俭的( thrifty的比较级 ); 节约的; 茁壮的; 茂盛的
If you say that someone is thrifty, you are praising them for saving money, not buying unnecessary things, and not wasting things.
My mother taught me to be thrifty.
我妈妈教我生活要节俭。
...thrifty shoppers.
花钱精打细算的购物者