"This action would cost $14,480,040.
You only have $141,064."

get this msg when i try to buy 3696 bushels for $36 in 1a

I get a similar message when I go to buy max tech.

Under the column where it says "you can buy", I input that number into the textbox, click the submit button, and it comes up with "this action would cost blah, you only have blah".

EDIT: when I say I input the number in the textbox, I meant that I clicked the link and it pops the number in the textbox.

I've gotten similar errors when buying military units.

yeah, i've had this problem when clicking on the max tech 'link'

the button seems to be erroneous, entering the amount manually works

Same bug here!

I've found the reason for the problem, and the game admins have been sent a message about it.

This action would cost $7,870,967,715.
You only have $1,575,252,929.

tried to buy 87.161 tanks at 520

I figured out the problem.

The javascript was filling in BOTH the units to buy field and the price to buy field with the same number.

So if you tried to buy X units using the You Can Buy, it would try to buy X units at $X, costing a total of X*X dollars, which is displayed if you don't have any money.

I figured this out when I tried to buy 300k troops and it tried to use 900m dollars, so I checked our trying to buy 719551 tanks and it tried to spend 719551 * 719551 = 517753641601 dollars (as a democracy, so no commision interference).

See the first post of this thread: 3696 * 3696 * 1.06 = 14480040.96 (as non democracy).

As another example, the post just above this one: 86171 * 86171 * 1.06 = 7870967715.46 (He clearly mistyped as 87161)

This problem doesn't happen as often on the Buy Tech page because people buy less quantities of tech (say 5000 tech at $5000 only costs 25 mil dollars, but it will buy 5000 tech at the lowest prevailing price rather than at $5000).

Xinhuan is correct. I simply did a packet capture and saw that the values for whatever you were trying to buy and the price it was being set at were the same. I didn't want to post it publicly, for I wasn't sure of the implications.