Help determining the price of used board.

I've got two boards two sell. I would normally just go online and see what the prices are. But this is UK and I live on the east coast where there isn't much surfers.
Bought them brand new 9" Torq £434 and a Torq 6'3 £279
Do you just half the price and sell it? None of them has been damaged or repaired.
My surf buddies are looking to buy it so I should give them a good deal. Honestly, they should put it up at the Cromer surf museum and say this is "Banz's board" the one and only legendary Chinese surfer with a fishing hat in Cromer.

Bought them brand new 9" Torq £434 and a Torq 6'3 £279
Do you just half the price and sell it? None of them has been damaged or repaired.
My surf buddies are looking to buy it so I should give them a good deal. Honestly, they should put it up at the Cromer surf museum and say this is "Banz's board" the one and only legendary Chinese surfer with a fishing hat in Cromer.


