I'm just so happy I found Lensabl, they do exactly what I've been looking for since many years. You can mail them your own frames, they will install new glasses and mail it right back to you. The choices among all different types of lenses are very wide, their service is very quick and in a matter of days you'll find your frames right back in your mailbox.
And also, very important, their prices are truly great, I've looked around and didn't find anything that even came close to them. On top of this, the quality of the product they provide is outstanding.
Looking forward to order one more time from them pretty soon.