Micro buy ins and rebuys are nearly impossible to keep track of while you are hosting (and drinking), even if you are writing it down. Even if u get the bank right, u need to deal with rebuys every other hand. So annoying as a host. The bag system cures all of that!
At the beginning of the night give every player a bag of chips with a pre- determined amount but enough for multiple rebuys - in your case say $250 (or whatever amount you want). Either collect cash or write it down. Let everyone do their own banking over the course of the night. If a player blows through the bag give them a rebuy in the same amount as the initial bag. The amount of rebuys over the course of the night goes way way down. At the end of the night each player tells you how much they are up or down. Everyone puts their chips in the bag. Add up the ups and downs to make sure the bank is right. if the bank doesn’t add up you can check each persons bag to find the error. This system is so much more accurate accounting wise and enjoyable for the host (not dealing with rebuys all night). Trust me, it works and works well.
Additionally, as a back stop, the initial bag should contain all the lower denominations necessary for the night. If someone does rebuy, introduce a new higher denomination chip. That way you can keep track of the rebuys based upon how many hi denomination chips are in circulation.
