I know what you mean about some of the websites selling laptop batteries. You just know that if you have any trouble with the battery, getting service or a replacement could be really difficult.
I recently went through over a dozen pages of google results, making notes on all the sites and prices, and there was only one that looked really good and reputable to me, which is Australian and not much use to you, as they don't appear to deliver overseas. And, it was no dearer than the others too!
A lot of those websites are apparently owned by the same people, or else they've copied the whole site from each other. With laptop batteries, just keep going through the results. The dodgy sites seem to spend more time optimising their google position than they do on good service!