Troubleshooting: How much does each Land Expansion cost?

I have been asked by some of my readers whether I know how much each block is to clear, so I have made a list of the amount in $ and the time it takes to clear:

Do you know what the Lost Boys say? (DO NOT READ UNLESS YOU HAVE UNLOCKED DISTRICT 4)

I have been asked by one of my readers if I know what the children say when you unlock District 4, as their speech bubbles disappear quickly, so: