The Blackheath Poisonings (1993)

S01E05 Shopaholics a.k.a. Live Stock Auction

The girls are employed by a cattle auctioneer who sends them to the feed store to collect some supplies. Nicole takes the opportunity to add a couple of extras to his tab, including a folding mirror and a $120 birdhouse as a Mother's Day gift for the woman they are staying with. When the auctioneer discovers the extra charges, he confronts them about it.