This gets, for example, a pair of polarised multifocal sunglasses with 1.6 lenses for $187.5. This is quite good if you have extras cover (very hard to get that kind of price at Specsavers or Optically).
If you don't have extras cover and don't need multifocals, cheaper options are available elsewhere (at Zenni etc). But a quick spot check of a few frames at Zenni shows that Dresden is slightly cheaper than Zenni for most multifocal options with this deal.
Discount applies to everything - frames, glasses, thinner lens, polarising etc etc.
T&C's:During the sale period same day service is not available, and some orders may take slightly longer than usual. Offer applies to new orders only, not applicable to existing orders. Apply promo code love50 at checkout. Offer applies to all prescription and non-prescription sunglasses only. Offer excludes contact lenses, clear prescription and non-prescription glasses and accessories. Discount is only available per person and can’t be split between multiple people. Discount can’t be used in conjunction with any other campaigns, promotions or discounts. Free shipping on online orders only, with a minimum spend of $125. Available in-store, online and over the phone. Offer ends 14th February, 2024.
zenni and similar are much cheaper if you know your prescription. all glasses basically made by the same parent company.