He asked for SPD pedals to go with his Aldi...Do SPD/Shimano cleats vary? I have Wellgo pedals & cleats which are fine with the Shimano pedals on the other bike.
I only suggested that you could get the pedals cheaper in response to someone else suggesting the same pedals!
I have no idea why he bought the cleats before the pedals, you'd need to ask him.
Personally, I would buy SPD/platform pedals for starters rather than dual sided ones if you are not sure and gives the flexibility of just using trainers rather than always cleated shoes.