I needed an upsize in thigh space (or stretch) on the City Trousers. Even though it was the same size as the Trousers in Clearance now, that I am happy with. I got my money back without any question. I couldn't identify why the City Trousers are £150 against the original price of £80 of the other pair though.
I am very happy with Rapha's merino base layers, they are a lot nicer than Icebreaker's, and also have a way better fit for a thin cyclist. I don't think their merino stuff is overpriced, other brands are just as expensive.
The Sky Polo is a standard mix (and fit?) of polyester and cotton, just like the 2009LEL polo. All their cycling specific clothing is speshul in some way, which explains the price difference.