[Laforet]

Probably not, they are expensive, fragile and have very limited utility outside a major eclipse event.

https://www.bhphotovideo.com/c/product/1335775-REG/formatt_h...

[branchan]

Most people don't buy expensive screw-on types like these for a one-time event. You buy some solar filter film and fabricate yourself a lens cover out of cardboard for about $10.

[dboreham]

Luckily I bought mine from Amazon and due to the ISO certification debacle they refunded my money and allowed me to keep it.