I'm after a bit of advice. What is the best way to manage payment for higher value items, when the buyer does not want to pay until they have physically sighted and ready to take possession of the item and the seller wants the funds cleared in their bank account before allowing the buyer to depart with the item - ps its a $15k vehicle and I am the seller. What's the usual protocol?

I have a listing that I need to update some details for. I have one bid at the starting price, so Trademe won't let me update the details. If I remove this bid will Trademe let me update the listing details ? Don't really want to delete the whole listing and relist as will lose the current watchers and the answers to questions etc which provide good info about the item. Hoping someone can advise ? Thanks.