Who has the cheapest spray foam?

Cheapest spray foam depends on type, DIY cans versus professional drums, but generally cheapest retail sources for DIY small cans are Walmart, Home Depot, Lowes, and Amazon for Great Stuff and similar gap fillers at $5 to $10 per can, while cheapest for larger kits is Home Depot or Amazon for Froth-Pak or Touch n Foam kits, similar to finding cheapest Packout deals. For small gap sealant, cheapest is Walmart or dollar stores with Great Stuff at $5 to $8, or Home Depot with HDX brand cheaper. For 12 oz cans, cheapest often Amazon with bulk pricing or Home Depot with sales. For larger DIY kits covering 200 to 600 board feet, cheapest is often Amazon or Home Depot online with free shipping, Froth-Pak 200 kit around $300 to $400 cheapest at Home Depot versus $400 plus at specialty stores. For contractor 55 gallon drum sets, cheapest is wholesale distributors like IDI Distributors, Spray Foam Systems, or local insulation supply, where closed-cell set $2,500 to $3,200, cheaper per board foot than retail kits. So cheapest spray foam for small jobs is Walmart or Home Depot for cans, for medium DIY kits cheapest is Home Depot or Amazon, for large professional quantities cheapest is wholesale insulation distributors buying drum sets, with cost per board foot decreasing with larger quantity.