Costs - cancellation of a return transfer notice

I also heard somewhere that you can apply for the deletion approval and then keep it very well, and then have it considered during a possible sale when registering the land register, so that a deletion is not necessarily required. But I don’t know how accurate that is.

100% correct. But it will probably say in the loan agreement that the priority notice must be deleted. So it depends on the contractual agreements. However, you are not saving money, just postponing the payment date into the future ;)

When selling, the buyer usually pays the notary ;-)