Dark Golf Holbrook lenses, why can they not be purchased separately?

[TGolfs]

I own a couple pairs of Holbrooks, but want to try the dark golf lenses. Is there a reason they don’t sell them separate like other lenses? Is eBay my best shot at finding just the lenses?

 

[Lumbergh]

You can from the customer service portal.

 

[TGolfs]

You can from the customer service portal.

View attachment 1127510

Ah, thanks for that!