It’s free to be a member of Swishing.co.uk. If you are a member, and mostly using swap credits to swap your items, the only cash payments required are a small swap fee (or minimum cash amount) for each item you order, and the postage & packaging costs of your orders (remember, you can offset your total P&P costs by using our Freepost scheme to send items in!).
More information on swap fees / cash amounts can be found under Item Pricing.
More information on delivery costs can be found under Delivery.
More information about our Freepost scheme can be found under Freepost.