If someone buys a trailer from you, do you supply temp plate to get it home or would he buy it, go register it then go pick it up?

The trailer needs to be registered just like a car.your reciet is the bill of sale

I'm not 100% on this but believe you have to go register it with the state then return to trailer it out..

Thank you both for your replies. That's what I thought but had to ask in hopes of saving a lot of running back & forth.