Kapla style blocks?

[Kyrptonite]

I keep seeing these mentioned but where can I buy them from?

Please say online. I am housebound all week whilst DS (4) takes a load of laxatives to fix his bowel and these blocks sound perfect for him.

Can you get someone to go to Aldi, or pick some up from Ikea for you? My friend phoned me last week to let me know they were in our local Aldi. I think she said. 100 for £12. The Ikea ones are less, but I can't quite remember.
I got fed up waiting for someone to go to an Ikea, so got some Citibloks from EBay - 2 weeks before the Aldi ones appeared :-/
They are brilliant, tho, and I know we'll get my money's worth from them.