I, and several others, have been very happy with the "Ultimate Solar Radio Node" that is available from PeakMesh on Etsy. It runs around $130 and it works perfectly. Ours has now been up for most of a year and has not required any attention at all.

There are also plenty of options for building your own. I found that doing it myself the way I wanted to wasn't going to save me all that much money. Being lazy, I bought one off-the-shelf.