I have found that by doing the research and spending time checking on the item required on the internet /argos etc for comparison prices giving the background needed to start negotiating confidently.
If you have an idea of the cost for the item that are being charged in the various outlets it gives a bargaining power, particularly at the moment when everyone is suffering with reduced takings. I am always polite and pleasant though and thats a must. If someone is unable to give or have no authority to give discounts then, no hassle I try elsewhere & Im not very often disappointed. Sometimes I get more discount than others I must admit, but I usually get something off the asking price. Re the large chain stores Im not so sure.Sale times /offers are usually the time for our large item purchases and my clothing buys are at a times when they are reduced.I very rarely pay full price for anything, especially insurances etc. I have just had a £1000 refund and a reduction in our semi det.house rate banding just by checking on the internet what my neighbour was paying for her property which has 1 more bedroom than mine.It feels really good when your successful but you have to put tghe time in initially to do your research. Good luck,do try it and once your successful you will never look back!.