hmm, £4 is very cheap. I think I'd better not look at the patterns! 
They do sound quite good. I think I ended up paying about £7 each for ds' Charlie's - they come with 2 inserts each, so not too bad a price.
I am only using Charlie's at the moment with ds - I have a mixture of OS and medium old-style (not adjustable via elastic, but still have leg poppers) and am using a medium size at night, with double boosters - no leaks so far. ds is (obviously) still waking a fair bit at night, but I don't tend to change him unless he does a massive poo, so he is in one double boosted medium Charlie from about 11pm until 6am ish. I am impressed so far.
your dd sounds a hoot, valium - glad she is enjoying her nappies 
I have just invested in a pair of flip potty training pants, as dd1 is still in pull ups overnight (she's 8, with severe ASD). when it was just her, I gave up on the washables, as there wans't enough to do a wash with, and didn't want them sitting around for days until I could bung them in the wash. but now that ds is here, and I am doing a wash most days, then she can go back into cloth too.
it was
££££-wise, but it does look good. it is just being pre-washed, so she can start wearing it soon - will report back on fit and absorbability in due course.