Bit more info I forgot to mention, both bikes have/had a starting price of £1000 and no reserve.
My guess for what it’s worth in reading your thoughts/inputs are; with no reported stolen Zesty’s fed back to Hotlines from their distributors these bikes have come from the continent, they pay a LOT less than us for their bikes so they could be legit but my money is on them haing been nicked over there and arrived in a loory or van, best optioin is that even if they were procured over there somewhere legit they were not declared to HMCR when they arrived, so, exported tax free from Europe at around 18% lower base price than here in UK and a nice saving of 20% VAT.