These trousers were the cheapest waterproofs in my local Cotswolds store by some distance. I went for them as I do most of my walking in the Summer, hopefully I won't have to use them very often!
Having used them in Snowdonia over the weekend, I found that they did their job perfectly, i.e. they kept me dry in both light and heavy rain, and when I sat down on wet ground.
I' give them the full 5 stars if they had zips to get them on without needing to take my boots off. However, for the price, you can't really fault them.