I have various twin and quad fin sets for sale, all US box.
I have bought, tried out and sold many fins for the boards I make, these are some I still have left.
17.5cm Meanline set $200 used a couple of times as new condition (a powerful fin for the bigger guy 90kg plus)
The below fins I designed and had made up in the USA
17cm flex tip twin fin set, brand new $150 suit under 80kg and below 5.3m sails (these are my favourite fins, feedback from guys who have bought them is fantastic, will loosen up your board)
17cm stiff tip twin fin set brand new $150 suit 80 to 95 kg sails above 5.0m (great fins too also don't pick up much weed)
Quad set 16 rears 9cm fronts brand new $240 (I use these in my current board)
16cm tin fin set used twice $150 made for JP himself and I managed to get hold of a set.(suit under 75kg)
PRICES ARE FIRM ... NO OFFERS..