: The most valuable are standard 48" x 40" wood pallets. Avoid those marked with MB (Methyl Bromide) , as they are toxic; look for HT (Heat Treated) or KD (Kiln Dried) markings instead.

This involves buying bulk lots of products (Amazon returns, overstock) and reselling the individual items. Where to buy merchandise pallets to resell? - Facebook

This involves sourcing empty pallets, often for free or low cost, and selling them to businesses that need them for shipping.

: Sell to pallet recycling companies , local warehouses, or distribution centers. Pricing : New wood (standard) : $11.25 – $12.50. Recycled/Used wood : $4.00 – $10.00. Plastic pallets : Used can fetch $10.00 – $40.00. 2. Flipping Merchandise Pallets