New glasses...

This week my husband and I went to have our eyes examined. We are lucky to have eye care insurance because the price of glasses is absolutely insane! For about 7 years we have been electing to use purchase our glasses online despite having insurance. I can buy about 5 pairs of glasses online for the cost of one pair at my eye doctor's office. I realize that there selling glasses is how eye doctor's cover the cost of staying in practice but I cannot tell a difference in the quality of glasses that I pay $25.00 and those that I pay $200.00 for. Given that everyone in my family wears glasses I simply cannot afford to buy glasses at the doctor's even with my insurance coverage.