Answer:
Nah, mate, you're not in debt.
Explanation:
The starting price is 1300 and you pay it, but since the store is giving an offer of buy on get one free, you'll be getting another bag of chips but you won't be paying for it. That means that you'll be getting another bag of Doritos and therefore breaking even, because you got twice the amount for the same amount of money, it's kind of you getting profit, but if you look at it from a practical stand point most stores actually charge a bit more for the products that are buy one get one free sometimes, but the price is still lower than buying two seperate products.
Thank you for your time.