Because a Lannister always pays his debts.
You pay up front for both and even if it's bad, you don't get a refund for either.
They can't afford to pay respects.
The G
When asked if they want to be economically joined with Greece, all they can say is "eeeeuuuuuuu"
They put two twins together to make a king.
GoT because they push twins together to make a king.
By swimming in their debt.
Because they have so much Antimony!