Am confused about exactly how buy now pay later options work on multiple purchases. For example, if I bought something a few month ago that what buy now pay 6 months later I understand that as long as I pay the full amount over that time then it's interest free.
What happens though if I add another item at a later date which has its own plan say for 12 months?
Let's say item a was £300 and item b bought later on was £600. Do I now still have to pay only 300 by the end of the 6 month period and the remaining 600 by the 12 mknth period or what?
Do payments always come off the oldest items first I guess is what I'm asking?