I think you might have made a mistake then because Black and Tan didn't own any bags, it was my bag of perc and rob p's bag of metmanticle said:Yeah - any splits should be organised by parties involved on their own terms. My experience of bulk buys is thus anyway - too much to expect the organiser can keep track of all splits.
There is a bag owner who pays and collects whole bag, then cash and pick up worked out separately (may still coincide, just responsibility doesn't rest with main organiser).