Insane prices on used series s?

Hey guys,

Anyone figure out why people are selling used Xbox for so much money? I’m not sure if it is just my area (Utah) but all I see in marketplace is stupidly priced used series S.. most are selling for 250, used, beat up, etc, and I see Walmart has them for 249.99 new..? I also ran across this one selling for 300 because “it retails 500 new”.

I bought two used ones last year or so, for 100 bucks each… was looking for a third one for my 3rd child but it seems insane to buy used right now. Thoughts??