There will be loads of cheap books at a car boot.
Depends on what you mean by cheap.
the best place to buy halo wars for cheap is disc replay
probably a store
Local newspaper
Sephora
Craigslist
The best place to buy reliable moving supplies at cheap prices is at Walmart and Target.
The best place to buy a cheap Nextel phone would be any place that sell a refurbished or new to you phone. Any where from a discount physical store to one online.
Walmart?
Ebay
I think you can try FashionTIY.
the best place to buy some cheap flights would have to be www.expedia.com, i have found that they have the best deals and that does include hotels and other stuff