PM'ed you to see what you're asking for.
Didn't think my prices were too unreasonable. It's been a while since I last logged on but fg had a value of roughly a nickel back then. Guess it's changed to roughly a little over 3 cents now.

Here's my math:
MCOC units
540 units = $4.99
that's $0.009241 per unit
FG
290 fg = $10
that's $0.034483 per fg
Now we find the exchange rate for the units:
fg value/ unit value
$0.03448/$0.009241 = 0.26798
what I thought they were worth
$.05/$0.009241 = 0.184815
135 units x 0.26798 (current exchange rate) =36.17744 fg
135 units x 0.184815 (what I thought exchange rate was) =24.95003 fg
Don't see how you think that's highway robbery considering units are easily obtained without spending a penny.