Choice of 5 different boxes of chocolates (Classic, High Cocoa, Mellow, Fortified, Rare & Vintage),
£6.95 via link including delivery (takes 12 days according to T&C's).
Then cancel your membership once you've received you box.
Quidco are offering £5 cashback however not sure if it works as it hasn't tracked for me.
*update* quidco tracked at £5 so potentially £1.95 :D