For those who said I should give him the benefit of the doubt, here's the chap's feedback profile.
https://www.ebay.co.uk/fdbk/feedbac...WELVE_MONTHS,overall_rating:NEGATIVE&limit=25
Which I really should have looked at before placing the order, eh?
I still don't get why you'd use really low value items in your eBay scam, tho.
In a couple more days I can get eBay to step in and, with that feedback profile, I would be extremely surprised not to get a full refund.
It's just confusing in that I can't see how this scam is supposed to work...
Another issue - clearly eBay are not acting on reports from buyers about dodgy sellers. The whole platform is a **** show to be honest. But then so is Amazon marketplace.