[mannyv]

His cost is probably around $4k per device, which gives him $16k to play with.

His gross profit is probably about $12k per.

Shipping is probably about $4k/container. It used to be $2k for a 40-foot before the pandemic.

He also has to front the money and carry the inventory, which is the real problem. The big manufacturers finance their equipment, which he probably can't do. So he needs to pay cash up front. Maybe he needs to sell 4 to cover costs. But then he needs to buy the next shipment, which'll eat up his cash flow.

FYI, this is the problem with inventory financing (or lack thereof): you need money to buy and carry the inventory. If you're not careful you'll lose money on the float.