I think it would be awesome for you guys to make money on Construct 2, and you deserve it, but please don't punish one demographic of game makers like Unity does.
Personally, I like Cockos' Reaper's pricing model. There's only one version of the software with one feature set. A full, commercial license is available for $225 USD, but a discount license is only $60. The discounted license requires that you either A. use it for only personal use, B. Use it commercially netting less than 20K, or C. Are an educational institution.
They also offer an uncrippled 30-day trial.
As a novice, If i want to make an album in Reaper and release it on itunes, it's totally possible. If it gets big, i pay for the big-boy license happily because I have big-boy money. Unity, on the other hand, requires the money before it comes in, but only if you're working toward a particular audience (?) So, if I want to release something with the same amount of effort, but a game instead of music this time, still on itunes.... i can't without spending 400 bucks? I'm fine with the existence of unity pro, some people would rather pay for assets than create them, that's fine, but the modular exporter is a catch 22 for a garage start-up because you can't even get the product out the door.
*i actually hate itunes with a passion.