You can also ask the seller for their xpub key and use it to derive a fresh payment address for each individual sale.
I didn't know about xpub key, thanks. But after some researches, it seems that it's not a good idea to share your xpub key, so I can't really ask this from my sellers.
One should always create a new receiving address. For each transaction.
I cannot ask the sellers to change their receiveing address by themselves, after each sell, this makes no sense.. Imagine there are 3 sales within one minute for example.