If I needed to save money and do a DIY I would use foambymail.com
If I wanted more of a traditional bed/mattress and had more capitol/money I would go with SleepEZ.com
If I just wanted a latex topper that was softer then foambymail I’d go with latexmattresscompany.com
No specific order
foambymail.com aka mattressbymail.com aka thefoamfactory.com aka foamdistributing.com
foamsource.com
Sleepwarehouse.com
Northernnaturals.com
Rockymountainmattress.com
FoamOrder.com
Flobeds.com
SleepEZ.com
latexmattresscompany.com aka arizonamattress.com aka Mattresses.net
slumberpros.com