Backed out from deal after he confirmed that we have deal

After saying fine to price we met, i went out and bought amazon gift card from request. He said that he will get in home and then we do the deal because he confirmed it. Then i did not hear anything out from this guy so i contacted him again on next day, and he said he got an better offer, so now am left with amazon gift card sure i might have use for it but it was **** move.