Where can I buy 30w Commercial LED Solar Flood Lights?
Amazon ebay any on-line department store or DIY store should have them Just google it and you will get a list
Have you tried Lowe's, Home Depot, or amazon.com? If not, try those places.
https://www.superbrightleds.com/cat/industrial-led-lighting/ I've bought lots of products here, just never outdoor commercial units.
Chinese sellers from ebay. Very cheap.