Now that I've been here a while and know what things cost, have noticed that I'm usually charged higher prices by merchants than Mexican customers, but today I looked at a receipt that I found in my bag and realized I paid for 33 bags of pasta at a local convenience store when I only bought 3! What an idiot I am. I was charged alomst $200 pesos for 3 bags of pasta and paid.
I also paid $6000 pesos for a pair of eyeglasses that won't stay around my ears and are blurry. The woman in the white coat lab coat who sold them to me was so professional until I came to pick them up, then she seemed really nervous and fast talked me into paying for the balance of them, knowing they were not worth what I paid. I should've known that something was up when the old man who seemed to also work there congratulated me for being an American and benefitting from such an excellent exchange rate.