I bought one recently at Craft Warehouse on sale (not the $60 one at JoAnn's). I attached to one of my sewing machines and I couldn't believe the difference! It's like I had been sewing in the dark for decades! I went back and bought 2 more bases to put on my other two workhorses...now I can move my LED light from machine to machine. Net cost was $10 per machine. Just can't say enough about the difference it makes!