Thanked - Came here looking for this answer as my order for $101.84 + tax and shipping for 3 items was split into 2. $45.23 + and $56.61 +cheaper_than_cheap wrote: ↑ Reminder that Amazon likes to split orders into multiple transactions, for reasons known only to them. So if you’re buying more than one item to reach $100, with no single item priced over $100, be prepared to contact AirMiles later to fix it. I haven’t heard of anyone being denied, but many have had to contact chat and provide evidence that it was in fact one single order.
Will see what happens