Name sells for 1000 with buyer paying fees can go...
1 - Seller is VAT registered and charges VAT on top of the 1k would end up with a purchase price of 1200 plus fees with the invoice stating a sales price of 1k plus VAT.
2 - Seller is VAT registered and charges VAT inclusive of the 1k so sales price would actually be 5/6 of 1k (833.33) with the invoice stating a dales price of 833.33 plus VAT of 166.67
3 - Seller is not VAT registered so only had a sales price of 1k. Seller gets 1k and pays income tax on any yearly profit from business.
I'm not an accountant but that sounds about right I guess.