Hopefully someone else can speak to exactly what a good spyglass would run in 1693. But as far as comparisons to the present, newer telescopes/binoculars are far better and cheaper. Once the achromatic lens was invented circa 1730 ( defying Newton's predictions that it was impossible), telescopes could be made that didn't refract light into its different components ( it may seem charming to have a rainbow haze around everything in view, but it's not in practice) . Various combinations of lenses in eyepieces ( erfle, plossel) were also developed that created a flatter, less distorted field, and the fine-screw rotating focus of a binocular is far better at making an image sharper than the slide of a spyglass.

Grinding lenses by hand vs with lens grinding machines obviously was more expensive, so optics would be like most other manufactured things after the industrial revolution.