Re: To misquote Harrison Ford...
people are still wary of making large electrical purchases online.
I can only speak for myself, but white goods and larger brown goods are things I only purchase online. White goods, especially, all look much the same, and you can't evaluate their efficiency or reliability in a brick and mortar store. So my usual purchasing strategy is to decide on a brand and model using sites like Which, then search for the model number online. Having filtered out the obviously dodgy suppliers, I order from the cheapest. I don't have to waste my free time driving to retail parks and gawping at twenty similar appliances.
Customer service? I can't say I've been impressed by the service in Curry's, Dixon's, Comet et al. And if your washing machine breaks down, you don't take it back to the shop for repair.
Speedy delivery? Understandably, most stores don't hold stock of large white goods on site, so the delivery process is much the same as for an online purchase.