What I've notice is the price of netbooks on window xp are starting to get reduced. This is because new netbooks will have window 7 ops running on them.
So expect some clearance prices of netbooks similar to the ones we saw with some laptops a few months ago, such as Sony Viao.
Keep a special look out on argos and tesco. This is just an assumption, hope it comes true. If a netbook was slashed by half price - deal of the century!