$300 worth of Back to School Clothing for $18

I did some great back to school shopping yesterday! I bought $300 plus worth of Old Navy clothing for $18. How did I do that? I used rewards points to buy an Old Navy gift card for $80, value of the card was $100 (Rewards points used so $0 out of pocket) I shopped on a Monday because Old Navy offers a Military Discount on Mondays and I bought clothing that was on sale for Back to School. It gets even better. I have $30 worth of Old Navy Bucks to spend in Sept. One of my best shopping trips ever.