I have noticed this too. I take great care to make sure to pick the parts with the little van by them; it shows one shipping location until I go to check out and suddenly there are two or more. I would agree it’s an algorithm or something. I doubt it’s intentional. So I emailed them this question and someone called me a few hours later. He said it is likely due to their shipping algorithm deciding that it's less expensive to split the shipment and ship from two warehouses, for example if a part can be shipped for less from a warehouse closer to the orderer rather than lumped in with the other parts and sent from the further warehouse. He said next time it happens to send a screenshot so they can look into it. He seemed genuinely interested in seeing if there's a flaw somewhere and correcting it.
logistics. there is an overall. time is money.
Had to have my lawyer threaten them last week. They owe my company $387 for a return we made. That was two months ago.
They openly called me a liar over a email, even though FedEx handed them the GPS info that showed it going from my door to theirs.
Not happy with them at all.
i have had this as well.....thousands of dollars for 4 trucks worth of brakes on one issue...turning a planned event into a rushed disaster..
it is a giant kick in the ballz. but it was worked out.
(eventually)
i give them a solid A- on a tuesday. but i am cave pig enough to like the sight as well.
and i hate amazon...they fawk me constantly.
it truly goes back to time and money.
overall this operation is ruthlessly efficient, and by far a win for scheduled maint.
if you live in the sticks its a godsend.
but if your on a time crunch....you buy where it is closest and in hand.