You have $1. The candy bar you want cost $2. So you sell your two pieces of gum for a $1. You then buy the candy bar. How many dollars did you spend to get the candy bar?
It wasn't just a 1st round pick. It was a first round pick and a 2nd round pick.
Edit: Nevermind. I thought you were saying we only used a first round pick. You were just saying we only used 1 first round pick.