100% Latex is not cheap that's for sure, but that price is on the high side.
Just curious but have you considered the difference in weight between the existing mattress and the latex ones? I just ask as adding a significant amount of weight behind the axles of a trailer isn't a good thing to do.
Per Mare, Per Terram and may all your campaigns be successful.
“It’s a recession when your neighbor loses his job; it’s a depression when you lose your own.” "Harry S Truman"