Class A engineering bricks

[flanagaj]

So I'm going to purchase some engineering bricks for below ground and for a couple of courses that will be behind the wood cladding.  What I'm struggling to understand is why you'd pay £1.50 for some class A glazed, when a 22N concrete brick is £0.50?

[Oz07]

Just if they're on show I think. How much is a class b red engineering brick nowadays? Used to be about 20 pence. 

[flanagaj]

53 minutes ago, Oz07 said:

Just if they're on show I think. How much is a class b red engineering brick nowadays? Used to be about 20 pence. 

They seem to vary widely.

 

https://materialsmarket.com/building-materials/bricks-blocks/engineering-bricks