I love Oakleys but anyone who doesn't think their prices are blatant ripoffs is kidding themselves. You are paying a lot for the name. And you don't need Oakleys or even to spend more than $25-30 to protect your eyes. Even most $5-10 sunglasses, suck as they might, will offer the same UV protection. Oakley has made a business out of 1) selling style 2) convincing people old and very cheap technology is somehow exclusive to them and really expensive. I buy for #1. It's nice to have good fit and finish too. But also even Oakley themselves often sells for 50%off and still make a profit.
Most glasses are 100% uv protection to the government standard, which is 60%. Oakley is truly 100%, because they hold themselves to a higher standard. So no, the glasses that you buy in the gas station are not protecting you the same as a pair of Oakleys, and neither are most high end brands. If you think I am wrong, look up the government minimum standards on UV protection.