Why Argos, WHY!?

I'm a huge fan of W7 nail polish, in fact of W7 as a brand in general.  I find that they are excellent quality for a price that suits my pocket.  What I am slightly amazed at of late is this...

W7 5 Piece Nail Polish Set

I buy a reasonable amount of W7 and have NEVER paid more than £2 for a bottle, so the above set at a staggering £29.75 is VASTLY overpriced.  

How about these ones?

Again, Argos are selling these 3 polishes at £17.85 a set!!  A cynic would perhaps wonder if our friends over at Argos are going to have these 'better than half price' soon...

Either way, I don't see W7 as a brand equivalent to OPI, China Glaze etc and I'd be amazed if Argos actually sold many sets at those prices. 

Would you buy them?