Burmese' Brain ... :)

This is very old one, you all might knew of it already ...Once there was a shop where u can buy brains ...brain from different countries ...and there a man came and asked " how much is the this one pointing to the American One ?"then the owner of the shop replied ,"It is $ 20 ."Then he asked ,"How much is the Japanese One ? ".the owner replied ,"It is $ 35. "And the customer asked again ,"How much is the Burmese one ? "the owner replied,"It is $100."The customer was suprised and asked," What?? Why??How could it be so expensive than other brains ?".the owner said ,"Cause it is a brand new one, never been used!"