Bryan Here . . .
I’ve used the Aqua Optics press-in gauge readers for a decade. These are plastic and adhere on their own to the inside of your mask, allowing you to read your gauges (or other things) with your mask on. If you’re anywhere near my age, you know what I’m talking about.
Last year the company stopped producing these lenses. But they’ve now released an improved version! These are glass, not plastic, and they glue in to your mask. (Easy to remove, though, as the glue will dissolve in hot water!)
Our shop has them in stock now, and at $36 they’re one-quarter to one-tenth the cost of having custom lenses bonded (permanently) to your mask. As I mentioned, you can remove them any time. They come in a range of reader ratings (1.0, 1.5, 2.0, 2.5, and 3.0).
The 1.5 are great for me although I need at least 1.75 on land. If you have a glasses prescription the lower “add power” factor is your reader power.