Anyone ever bought in Opensea?

I wonder if I buy a stuff like for example 1 ETH, will that item price is being 1 ETH also? If yes so can I sell it more expensive?

I really want to buy this one https://opensea.io/assets/0x60f80121c31a0d46b5279700f9df786054aa5ee5/7665?ref=0xd60f8eb12da2099feae36fcb7e4b603eaec5a965