Trademe vs eBay

This is a genuine question, and I hope it isn't too far off topic?

I'm in the UK. That means I'm neither allowed to sell or buy on TradeMe, which appears to be the biggest NZ online auction site. My usual selling platform is eBay, but I worry that if I sell items which are of specific interest to NZ collectors (I'm thinking of my Mercer Railway cup, just at the moment), it will not be spotted by the main interested parties.

Do people think that most New Zealand collectors look beyond TradeMe, searching for treasures being sold overseas on the various eBay platforms, for example?

Might I do better sending my cup to a specialist "regular" auctioneer in NZ? If so, does anyone have a recommendation for one that has an interest in NZ ceramics or, even better, NZ railwayana?

BTW: I had an amazing holiday in North Island in 1987, and plan to come back one day - you live in an amazing place!

Can anyone help?

Personally I keep a close eye on ebay listings for NZ Pottery, but I rarely buy from that platform as the shipping is over the top expensive.

Your cup will be of interest to NZ Rail enthusiasts, but won't have a large value. I suggest you track down some groups and offer to sell direct.

Good luck, Cheers Ev