Depending upon budget. If you can get them second hand from a privated seller sure why not. However dont bother buying from second hand businesses.

Ac and fridges (lesser known brands) are best bought brand new. Otherwise you will be saving say 20%-30%.

Stoves or cooking ranges are best bought second hand. Oh and... dont bother with electric ones. Gas stove makes better sense (economical). Elecs send your bills up the roof.