Simon’s likely the reliable source for that $5 zoomie.
You can find what looks like probably the same thing cheaper (as well as for $$$$ from scammers)
Since there are so many ways to cut corners and cheapen stuff, stay with a known honest source.
I don’t have one so I can’t compare it to
Another possibility I’ve mostly been lucky with is the Zeusray ($7.99, free shipping, sporadically available/backordered/available again, and now they have a “pre-order” button)
When it’s good it’s rather good, though some batches have been horrible (they’ve sent good lights promptly to replace bad ones, in my experience)
https://www.dealmetic.com/product.asp?ID=FL05518
https://www.google.com/search?q=site%3Abudgetlightforum.com+zeusray