Spectera Walmart Vision Insurance. Can WalMart Charge Extra $ 30 Sales Tax On Full Retail As If You Did Not Have Insurance?

Vision Insurance. Can WalMart charge extra $ 30 sales tax on full retail as if you did not have insurance? - spectera walmart

I have my glasses at Walmart with my insurance Specter. I had to pay up to $ 15 co-payment for lenses and $ 15 for senior staff. So I owed him $ 30 plus taxes. But then, WalMart and instructed me to raise $ 30 tax-revenue as if you were paying $ 350 for all vessels. Is this legal?