Best way to ship a combo stateside?

[DavidLopezJr]

I have a guy trying to sell me an Ampeg B200r about a stateaway. Any tips for packing it and the best/cheapest but still good way to ship it out?

[JimmyM]

3 inches of peanuts or bubble wrap into a sturdy cardboard box that fits the amp well should do it. of course usps is the cheapest, but some prefer ups or fedex because of some delusion they're under that ups and fedex treat packages better than usps.