There is an "activation fee" of £0.99. You need to pay the fees via a debit/credit card.
Purely on the basis of mathematics, when paid the following will be true:
Once paid the monies will be going into my imutual Cashback Investment Club fund.FREE SIM = £0.00
Delivery = £0.00
Activation Fee = £0.99
imutual Cashback = £10.50
imutual Shares = 100
Net Profit: £9.51 + 100 imutual Shares