Good job

Thing is, if you do stay under the limit, the shipping isn't all that bad. 120 bottles, something like 5 (maybe 6) shipping, only adds 4 - 5 cents on the unit cost. The 100 15 ml beakers, plus whatever 6 ml I could squeeze in came in just at the limit.
As far as PIF in general, I think of a PIF as just that, a forward of things, putting it on the table for whoever wishes to pick it up. The PIFfer builds good karma by putting something out there that another may use. The PIFfee does whatever. Not a Need, or a Want, which are recipient oriented. That's how I look at it. The Treasures thread is even a purer form, in that the giver hasn't first accepted something, instead simply has something they wish to give another if that person would like it.
That's what attracted me to this area -- some threads that are really about purely trying to help others succeed at something that has helped us, when we can. It's good for the soul. An occasional miscue is just that, a blip.