I think online eyeglasses stores are not willing to handle this for you. You need to send your eyeglasses to them. You must pay for the shipping fees. After they replace the lenses for you, they will send you the glasses. You also need to pay the shipping fees. Though the lenses sold online are cheaper than that sold in any physical shops, the extra shipping fees are not cheap. So I suggest you to replace your lenses in a nearby eyeglasses store or buy a pair of new glasses online.
Online eyeglasses stores will not replace the lenses for you. But most of them can offer you a pair of cheap glasses. If it is too expensive to replace the lenses, you can consider buying a pair of new glasses. Maybe your old glass frame is out of shape and you need to replace it too. Go and visit an optician first. Good luck!
Maybe lenscrafters or walmart can offer the lowest prices for this. If you still can't afford them, you may need to find a pair of free glasses online. Sometimes, we may come across some discounts or free glasses if we are very lucky. And the quality is the same with other glasses. Good luck!
Sweetie, you can have a try! If you bought those glasses from Firmoo, Firmoo can replace the lenses for you only if there are available lenses. I used to think that no online eyeglasses stores will handle this kind of things because it is very inconvenient and will cost customers extra shipping fees. But if you are willing to pay that shipping fees and think the price of the lenses are reasonable, you can have a try. I suggest you to contact the online customer service immediately. Hope this helped!
If you want to keep your frames and only replace the lenses, the only place that you can replace new lenses is where you bought them originally. So if you only want to get new lenses, just go back to the same place you got them, they will replace them for you.