Nice graph, however some of the 'Prime only' prices won't show up on the 3 humps website.
I picked it up for £49.99 as well from Amazon. Brilliant rotary line BTW...
Even better at that price, I did check Amazon and as you say currently £79.99, as for regularly below £50, camelcamelcamel doesn't quite agree, been below £60 a couple of times in last month or so, however not guaranteed to continue to be the same trend.
Got his last week for £49.99 amazon prime but now gone up to £79.99 but regularly below £50 on amazon