if there is a canvas house there, you might be able to negotiate the purchase of some foam from them. Even though the foam will be more expensive, you might be able to break even or maybe even be ahead by the time you've paid shipping
A good suggestion and one I've already tried. They aren't really getting any breaks on foam apparently and have to pay a tax since it's for resale (a tax I don't have to pay). By the time they add on their markup I might as well fly to FL and buy a second one-way ticket for the foam to fly back with me in an adjacent seat.
The foam in the vee berth and aft birth look brand new and are somewhere between hickory and oak wood in softness. I've never in my life felt such firm foam! As soon as we sail out for a trip I lay down and am reminded how miserable the foam is. Then I come onto SN and get reminded to do something about it.