Quote Originally Posted by Philbert
I'm pretty sure that in RTW you pay for buildings on order. Maybe the meddling with the build queue was also possible in RTW, but if you have paid for the buildings already it makes less sense.

I'll experiment with RTW when I get the chance.
RTW: Buildings and Units are paid for when put into the build queue.
M2TW: Buildings and Units are paid for when it's their turn in the build queue.

In MTW, the game randomly determines what starts building if you don't have enough cash to cover all training and building costs. I presume it prioritizes unit construction before buildings though. I definately prefer M2TW since you can put whatever you want into the build queue, but it will only pay for what is up next. Also, you can decide if you suddenly need something to build by emptying other queues to "recover" the cash, and then everything else added afterwards gets put on hold.