Tony Stark uses a perpetual inventory system. Tony uses the net method to record sales discounts.

On October $1,$ Tony Stark sells merchandise to Black Widow, with credit terms $\frac{2}{10},\frac{n}{30}.$ The selling price of the merchandise was $$10,000.$ The cost of the merchandise sold was $$7,000.$

On October $5,$ Black Widow returned $$600$ of the merchandise to Tony Stark. The cost of the returned merchandise is $$250.$

On October $8,$ Black Widow paid Tony Stark the balance due.

Prepare Tony Stark's October $8$ journal entry.