My quest for Pelite Petunia has lead me into classified ads. What are thoses?

[WingedDragon]

https://www.ebay-kleinanzeigen.de/s-anzeige/mein-kleines-pony-my-little-pony-bluetenfee-petite-petunia-g3/2185240579-23-8583

https://uk.wallapop.com/item/my-little-pony-g3-petite-petunia-nueva-pelo-largo-864136139

I am trying to get one pony from non-English websites, and to be will be delivered from some Island in Spain or some town in Würzburg.

From what I understand, classified ads are technically off-site selling. This means I can't request a return or refund, except for PayPal business option.

Does anyone here have experience buying from said websites? The seller have good rating, but that depends on how trustworthy the websites are too.