Gold cap atm is 1 B. However, many rare vanities are worth/traded for (alot) more than 1 B. Some are even worth more than 10 B.

Gold cap already had been raised one time to make trading safe again. This needs to be done again to make trading easy and safe again.

At the moment, one player has to "go first" when gold amounts over 1 B are asked for an item. Risky trades should not be in the game. For everything more than 2 B, you even need to switch accounts during the trading process, what is more than suboptimal.