| Halfords
I know large stores like Halfords have huge overheads ect and have to make a profit but I've just fitted a Sony radio to my daughters Ford KA. I needed an adapter kit consisting of a plastic fascia, an adapter lead and an aerial adapter.
Cost of an adapter kit in Halfords £41.(components had to bought separately)
Cost of an identical kit (in the same packaging) off the Internet, including p&p, £13.50 | 
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