How did you pay ? Paypal with Buyer Protection or ?
Yes, paypal. Regular paypal payments always include buyer protection, AFAIK. Alibaba also holds payment in escrow for some time. I haven't checked the details of the escrow service because I treat it the same way I treat ebay or local classifieds: talk to the seller and gauge their cooperation and honesty beforehand. I've been buying 2nd hand all over the world for well over 20 years now, bought literally hundreds of items for myself, family, and friends, and an count on one hand the number of times I had any sort of issue.
These 165 EUR you mention, would that be including Taxes/VAT (DDP) or without ?
Prices on the website are always without shipping and taxes. I ask for a quote for X cards with DDP shipping to my address (Germany) and taxes, and then work the price per unit.
It really doesn't cost anything to write a message to a few sellers. You can even copy-paste the same message to multiple sellers. It also doesn't cost anything to try to negotiate the price. The worst thing they can say is: no discount.
The 16GB for 65 EUR seemed like an OK Deal, but maybe I should NOT have done that after all if the 32GB is just slightly more than double the Price.
EDIT 1: Today alone look like approx. 100 Pieces of the 16GB Model were sold on PIO Website

. Only 83 remaining. I wonder if I should order another 5 Pieces there

.
My issue with the 16GB model is density. Even with six cards, that's 96GB VRAM. Not bad, but not great either. With the 32GB cards, those six cards get you 192GB VRAM, which opens the door to running a lot bigger and more interesting models.
The cards idle between 15-22W whether they're 16 or 32GB, and whether they have a model loaded or not. So, there's also that, but at 65€ it'll be a while before the cost of power comes into play.
I have Gemma 27B Q8, Qwen 3 Coder 30B-A3B Q8, and Orpheus-Kartoffel 3B F16 loaded on four cards, and can still load gpt-oss-120b on the remaining two cards plus the 16GB left on the one running Kartoffel. Or, I can load Qwen 3 235B on five cards with lots of context and still have room for 30B or lower model on the sixth card.