You are a buyer. You can buy at most three Robot Dogs. You valued your first unit at $6.50 and purchased it at $4. You valued your second unit at $5.50 and purchased it at $4.50. You valued your third unit at $4.50 but did not purchase it. In your market there were a total of 10 Robot Dog transactions. Note that the cost to each community member from a single Robot Dog transaction is $0.20 nuisance (damage). What is your profit at the end of the round taking into account all nuisances?