In reply to Damian L:
it's not just some 'internet dealer' - they have real shops at some of the london walls.
i've not used them personally but if the product suits what you need then they seem legit enough.
with the rope deal - phone or email them and get confirmation that you will be sent a pair of differently coloured ropes.
the site just says 'colours vary', but it would be a pain in the arse if they only have red for example.