Pitney Bowes have a blanket ban on any sort of knife. Period. Attested to in many other threads, some of which you probably should have read pre-purchase.

Nothing to do with eBay.

Ps. There are many suppliers of knives in Australia. I have a large hunting knife, very good quality, bought in Australia, thus supporting the Australian economy, not the US economy.

P&B even prohobit a simple butter knife.

I wept onto my soggy toast upon realising that. To obtain the butter knife that I wanted, I was obliged to find an alternative way of going about it. I ended up ordering direct from the silversmith company who could send from the UK to Australia without an issue.

Stainless steel.

Silver is quite tiresome to keep in good condition.

Do you hunt rabbits?

I'm more of a moth-hunter... but I don't hang up their heads on my walls.

That settles it. The fruit flies that I hunted are also going to keep their heads. They'll be dead but without the decapitation treatment.

Anyway, there we are. Knives of any sort - even just cutlery sets - are problematic when ordered from an overseas seller, if they are opted in to the GSP.