Cost.. don't know - depends on a lot of things.
How long.. I probably started thinking about the very basics about a year ago i guess.
How many pairs for Falmouth.. Probably just the one. They're not in the least bit cheap (yet)

For the parts alone, they cost something in the region of £50 for a set! I have cunning plans to make them much cheaper, more compact, and quite importantly, more robust! They're in a relatively fragile form at the moment...
They're not actually socks - cones of rip-stop nylon in fact, but close enough
