Fyi - i went to a local walmart a few years ago. Got eye exam, glasses, and contacts. Contacts just did not feel right, but got tired of going back, only to be told, there is nothing wrong.
I went to only eyes a few months ago, wearing the glasses from walmart. They checked the rx (on lens) and told me i have astigmatism in right eye. I called walmart and was told same thing. I asked walmart why they sold me glasses with rx for astigmatism, but not contacts.
I paid around $60.00 for complete exam at only eyes, but i have returned twice, with no addl charges. I am not in agreement with $ for glasses/contacts, but i have never had such a thorough exam.
Also i know alot of local businesses do comparison shopping on glasses and contacts, even with printed on-line prices.