Advertising grossly overpriced items on TM is not particularly new.  About 15 months ago we were looking at buying one of those small plastic ride-on cars for infants that have a hole in the bottom - move by foot power (this type of thing - https://www.trademe.co.nz/toys-models/rideon-toys/cars/listing-2327555063.htm?rsqid=52938395dd3f45eab5a2ea174db4a3f0-001).  Prices at the time ranged from ~$90 to ~$140, apart from one on TM advertised for about $1600.  Opinion at the time (ex. a bank manager) - "It is not uncommon - done for laundering money".