Its not just about saving a few quid. I found Specsavers very good recently for my first time varifocals - got a regular pair and varifocal sunglasses. Ok it cost over 500 euros but I value my eyes HUGELY but I may go online the next time for varifocals now that I have gone through the f2f process. First time happier to get the support of meeting opticians etc.Horses for courses; but in my view €420 less 25% is still a shed load more money than €76!
I order my contact lenses online but get a physical eye test every 2 years.