I cannot watch Lindsay Gunderson: she never stops screeching at the camera. And nothing she says really relates to what she's selling, either.
Another who I cannot watch is Mark, or "Larry Olivier" as I like to call him. Because he turns a falling auction into a 3-act tragedy. As the item price decreases, his cries of woe and looks of shock and dismay increase: "We can't do this! This is FAR too low!", and then he has fake conversations with the producer where he questions the validity of the prices, and hides his face in his hands. These are annoying at the best of times, but when he insisted on doing this during the recent TJC sale (when you expect prices to go lower than usual, yes? Because TJC is trying to shift unsold stuff), then it really got on my bosoms.
Despite all that the TJC presenters like to say that they have authority to set prices etc, or feel personally affronted if they feel stuff goes "too low", in reality it's all an act to try and get viewers to buy. Lindsay Gunderson actually gave the game away during one show by explaining that the presenters are all freelance, and in her case the job she considered was her "main" job was working as an auctioneer. Lindsay said that she's no gem expert, she's just paid to shill stuff at the prices set by TJC management and she has no control over those.
Worth remembering the next time Chloe starts saying how she fought to get something included in her show at a low price, or Mark starts throwing a badly-acted tantrum because of an item's price. It's the sort of thing presenters on failing selly telly channels do to drive up sales.