Another good tactic to try is to buy something but ask for another product to be thrown in for free.
I did this last week in Curry's when I bought a laptop computer. I told the salesman that I could only buy IF they threw in a free cordless phone costing £30. The guy thought about it a bit and then tried to suggest that this style of business wasn't really possible.
I countered saying if that was the case then it wasn't possible for me to buy the product, and I'd have to go instead to the internet or John Lewis.
5 minutes later I was walking to my car with both the Laptop and the phone.
Laptop Buying Tip - Size Is Important
When looking to buy a Laptop think hard about how you're going to use the machine because the size is important. Small is beautiful only if you're going to be on the move a lot.
Many Laptop owners buy them because they look better than a standard PC and take up less room. They don't buy them because they want the portability. If so then you're far better off with a large machine which comes with larger screen (17") and keyboard.
Incidentally the new Laptop I bought was a Compaq A935 for £450.
Nice machine, good specification which will last a good 4+ years before it needs replacing. Having a quick scan on the web Dixons are selling it for £450 (which is the price I paid in store at Curry's) but apparently if you enter the code 'ENTER5' when ordering online it offers a discount of £25.