How much will profits increase for every unit sold over the break-even point?

Answer 1

When you say break-even point I assume you mean the number of units that you have to sell to cover your costs; i.e. overhead such as an office space, salaries, insurance, etc.

Once you hit the break-even point your profits will increase by the selling price of the unit minus the net price of the unit. So if the unit sells for $10 and it costs you $5 to buy it, your profit would be $5/unit (excluding taxes).

Answer 2

Without knowing all of your numbers it's not possible to say.