There seems to be a lower price on the Thames & Kosmos Wind Power 2.0 Amazon product this Winds-day. From the description:
“Electricity generating turbines”
“Build wind powered generators to energize your electric vehicles and charge your rechargeable batteries (permakent: in theory)”
“Kit includes two styles of wind turbine blades and a gearbox with three different gear ratios for experimenting.”
“Explore this amazing free source of renewable energy”
“Kit comes with everything you need”
I bet Jeff Harmon at Missouri Wind and Solar, who has a popular YouTube channel for the topic, wishes it had a troll repeller. Some folks had been tormenting him on the Internet, perhaps because of foreign trade issues? See Jeff talk about it last December, https://youtu.be/IUGajnq5QtQ.
Also see Jeff visit one of his suppliers, Missouri Wind and Solar visits Helios America Solar Panel Factory, a manufacturer in the United States.
For home windpower newbies, Jeff explains the basics, Wind turbines for the beginner How to part one by Missouri Wind and Solar (also embedded below):