I recently bought a camper and being winter I wanted to start a project to use this summer. SO I wanted to make solar cells. I researched online and came up with various ideas and via google shopping found fair prices at solar winds usa. I ordered appx $130.00 of 4x4 tabbed solar cells. This means that they have wire soldered to them in two places and helps if you are skilled. I called after 10 days and was assured it would be in the mail the next day. Two weeks later I finally got thru on the phone while the "owner" was on a roofing job. He kept huffing about his labor on a ladder. I got a refund the next day from him and was assured that it was a mis understanding. IF I were to resubmit my order he'd see to it I get my product. So I did and feeling reassured up'd the order for 72- 6x6 tabbed solar panels. I received them a week later... untabbed of course. The "owner" now will not answer his phone nor return messages. Awaiting a paypal claim partial refund. Steer clear of customer service that's dealt from while on a ladder.