Young$$s Graduation Invitations is evaluating results for its most popular product, the all$-$in$-$one college graduation and party package, which sells for $$195\mathrm{.}70$ per unit. Management has provided the following cost data for two levels of monthly sales volume:

Unit sales volume $6,0007,000$

Cost of Goods Sold $$457,800$ $$534,100$

Selling, General and Administrative Costs $$621,000$ $$639,100$

With a projected sales volume of $6,300$ units, the best estimate of the total contribution margin is: