Which is the better way of framing the solution to this simple math problem?

I was thinking of using this problem for tutoring. I can see two ways of answering it, and I can see advantages to each approach.

Problem
A store buys 10 widgets at $2 each and sells 8 of them for $3 each. What is the store’s profit?

Method 1. Total cost is 10 x $2 = $20. Revenue from selling 8 is 8 x $3 = $24. Profit = $24 – $20 = $4.

Method 2 – Profit from widgets sold is $1 per widget sold. 8 widgets sold gives profit of 8 x $1 = $8. Cost of 2 unsold widgets is 2 x $2 = $4. $8 – $4 = $4.