This is a 2 part answer and each market is so different, but I will share our goals.
In terms of breaking even via gross revenue, We believe a market should break even in less than 120 days.
In terms of net profit, it is much harder to judge. Each franchisee can go as aggressive or conservative as they choose as long as predetermined revenue markers are being met. In the agreement most markets will have a monthly gross minimum of $10k a month in revenue or so.
At the moment it seems most markets are growing on average at a steady $5k per month. For example first month would be $20k, second would be $25k, third would be $30k.
With That said, So much depends on the franchise operator... The numbers will stabilize overtime, but with demand growing every day and not deviating from the BT model I'm confident most markets will see $40k+ months on average.
With those kinds of numbers net profit I would assume to be $5 -$10k per month. With that said if an operator wants to dominate. Instead of pocketing profits you could buy a second van and possibly save up to buy another market.