$2,049.91
Your grand total with the 4 checks you added was $3725.16, and you’ve already paid $1675.25. Here’s how it all breaks down to the payment reflected here:
ORIGINAL ORDER
48 checks: $2980
Shipping: $20
Tax: $292.50
CC fees (1/2): $58
$3350.50
ADDITIONAL 4 CHECKS
4 checks: $335
Shipping ($0, cost covered by original order)
Tax: $32.66
CC fees on new order (1/2): $7
$374.66
Adding both orders: $3725.16
Less 1st payment of $1675.25 = new balance of $2049.91