Well I will go the other way and say buy them, I did.
This set up works for my intended purpose, I have a 25 foot TT , all the lights have been switched to LED's, no TV and I dry camp for 3-4 days at a time. I have two 12V batteries and spend 90% of my time outside or away from camp dirt riding. I cut the PVC frame the panels come with in 3 pieces so it all fits into a big duffel bag to transport. I have a battery monitor (cheap plug in) and these panels keep my batteries topped up after a full day in the sun. Northen NM camping so sun is pretty much full on all the time. I also use the panels on the TT when it is stored at home to keep the batteries at full charge.
I am really a low electric use guy, I only use one or two interior LED lights in the evening plus the water pump and the stereo that's about it. I have a Yamaha 2400 gen set if I really want to use the AC or need more power. I BBQ 95% of my meals outside and the frig is switched to propane. For the price I figured I would see if solar worked for me, it does and I will eventually upgrade to panels on the roof of the TT but for now this set up works just fine.
