they are scam and I rather use mercari!

Is buying from Curtsy safe?

Payment on Curtsy is safe and easy for buyers and sellers. You can use any credit or debit card and Apple Pay or Pay Pay to buy an item. Curtsy holds the buyers money until the seller ships the order.

Is Vinted safe to use?

Vinted is full of scammers & they offer no real protection to buyers or sellers. They charge you for 'buyer protection' which only covers the item. - You have to return it fully tracked at your own expense - which can often cost more than the item.