I would give the CO normally a handshake of $150. Once we had the DO visit and while I was working with him in service, he was explaining all the expenses they had. I had just got a nice bonus from work and gave him a $500 envelope. What a waste. The CO went more often on vacation than I did and the DO was shortly thereafter DFed.
i know of one CO who bought a house cash when he retired. They are well off. I am sure the same goes for all higher ups, especially the GB.