Assume Beta Company uses the perpetual inventory method and engaged in the following transactions: 1) Purchased $11,000 of merchandise on account under terms 2/10, n/30. 2) Returned $1,100 (list price) of merchandise to the supplier before payment was made. 3) Paid the account payable within the discount period. 4) Sold the merchandise for $14,300 cash. The amount of gross margin from the four transactions is