For example, Jaccobs had lenses and bodies discounted by quite a bit last year, they had a grading system too, A-B-C, A being brand new B i think was stuff that had gone back to manufacturers for various reasons but still had 12 month warranty. Some places did no VAT prices. Others did stupid deals to get the customers spending. But a lot of people just haggled and played off different stands with each other.
I think the best thing is to asses what you want might need, find your best price, maybe print the details off. Then you can go armed knowing anything better than that is a bonus.
I got a sans disk extreme iii for £49.00 last year which at the time I couldn't find one for less than £60-70 on tinter web.
Another good thing is you can get better than internet prices but deal with someone face to face, check the purchase over etc...