They were actually $19.99 in some markets and $40.00 for a twin back with free shipping on Costco.com ......they are back to $29.99 right now. Waiting for them to back "on sale".
Plus some of the LOA and Honeywell lights do not have daisy chain connection, they have clear lens and power cable out the top which makes surface mount a problem. These issues vary with stock.
I bought 6 of the same lights last summer from Costco for a couple $$$ more. So far so good and they provide a lot of light. I need 4 more of them so I hope they go on sale soon.