Where she had her eyes tested she saw a frame she liked - £170, came home and found an optician selling them at £108. That is 63% of the local opticians price and the one on line will be making a profit.
I presume that 'non designer' frames grow on trees or is at a case of all are designed it is just a competition to see how much you can screw out of the punters.
Perhaps, even mystifying to me is how they can ask £349 for some.
"Don't think of them as problems, think of them as opportunities."
"OK, I think I've hit an insurmountable opportunity!"