A one year contract has been offered which will utilize an existing machine that is only suitable for such contract work. The machine cost GH25,000 five years ago and has been depreciated GH4,000 per year on a straight line basis and thus has a book value of 5,000. The machine could be sold now for GH8,000 or in 1 years' time for GH1,000. Four types of material would be needed for the contract as follows; Units Price per Unit Purchase Current Current Required In Material Price of Buying- Resale for Stock Stock in Price Price Contract GH GH GH WXYN 1,200 300 1.80 1.50 1.20 200 1,100 0.75 2.80 2.10 3,000 600 0.50 0.80 0.60 1,800 1,200 1.80 2.00 1.90 W and Z are in regular use within the firm. X could be sold if not used for the contract and there are no other uses for Y, which has been deemed to be obsolete. Required: What are the relevant costs in connection with the contract (ignoring the time value of money)?