Did you see them online, looked but dont see them?FYI
Aldi in the UK have these in stock this week:
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You can fit 4 pucks per slot (although I suspect more if you have just the blades).
£2.39 for two.
Made by Wham
I picked up 2 lots last night on way home and they're perfect size for my shelf in the bathroom . They did have different sized ones but I went with same ones as Duke CaboomDid you see them online, looked but dont see them?