Just saw some nice bras on Rihanna's lingerie site, and very cheap at £24 for 2.
Noticed just before I checked out that "VIP membership" had been automatically added to my basket. Clicked for more info to see that I was signing up to pay £50 a month membership fee unless I remember to opt out each month. £50 a month!
You have to tick the box to say you've read the T&Cs but the number of people who click without reading must be huge.
(I took the VIP membership out of my basket, at which point the prices went up 400%. I've no problem with savings clubs as long as it's abundantly clear what you're signing up for but I think this one is genuinely sneeky and designed to be overlooked.)