Almost every time I visit the PO, I discover some new service improvement that makes me laugh. Today I bought a pack of Express Post satchels and found out that the small variety that used to be limited to 500g, now can be used for up to 5000g and it only costs about 12% more. But the funny thing is that they made the new satchel so small that the only object weighing 5000g, that would fit, would have to be a solid block of steel, copper or lead. I don't think a 5kg aluminium brick would fit.