AAS approved - https://eclipse.aas.org/resources/solar-filters
Someone on this video (https://www.youtube.com/watch?v=7Jmdo5jJIeQ) got this ISO certification - https://drive.google.com/file/d/0B5zcT8x8808gOE82aks3NUpPSTA...
Another product page - https://www.daylightsky.co.uk/collections/eyeware/products/p...
I think they might be safe enough.
Update: Looks like the seller "Tried and true products" is Joseph Harwood, who works at this company, https://beta.companieshouse.gov.uk/company/09572536/officers which owns the trademark Daylight sky, https://trademarkalertz.com/owner/DE-BIRD%20LIMITED "Tried and true products" also sells de-bird products. I guess they might just be sister companies or something.
http://www.prosolareclipse.cc/imageRepository/dff59a28-760c-...
The Eclipse is 1 week away after all
This is apparently the source of the glasses although the seller was third party. I don't want to toss out perfectly good glasses because Amazon freaked out and banned anyone not on an exclusive list of suppliers.
http://www.prosolareclipse.cc/products_list.html