Sure.  But since (ignoring batch 6) we're very unlikely to get anything close to an exact multiple of 10,000, how do we get one?  Either we force some people who want refunds to get chips or we force some people who want chips to get refunds.

ETA: So to clarify: Pretending batch 6 didn't happen for a moment, to keep things simple: If we have 15,000 people across all batches wanting chips, do we order two batches or one?  And how do we deal with the people who didn't get their way?  Either way there will be 5,000 chipsworth of people who didn't get there way.  And BTW, I claim 'chipsworth' as a new word :-)

roy