I'd suggest that you google bitesizedeals before buying from them. A couple of months ago I tried to buy the 70-200 F4 IS at a price that looked too good to be true. It was too good to be true. They took my money from my account straight away, and I heard nothing from them. I emailed about 10 times over a period of two weeks, before getting a reply saying that they were currently out of stock. It took a further three weeks of emails trying to cancel my purchase. They provide no telephone number, so the only way to get in contact is via email. Eventually I got my money back, around 6-7 weeks after taking it from me in the first place. Reading complaints about the company on the web made it a very nervous 6-7 weeks.
The company is based in the USA, and you will most probably have to pay import tax on top of the initial outlay. I'm not saying that they don't send what you have ordered, but the worry of them taking your money, and not being certain of delivery or overall cost is not worth the savings in my eyes.
I see myself as being lucky that I got my money back. Moral of the story is to thoroughly investigate any companies that you have not bought from before. I wish I did.