jwolthuis - 8:33 pm on Oct 9, 2011 (gmt 0)

The majority of your site's traffic comes from serving "images", not HTML markup or javascript.

Host your images elsewhere, but retain the product pages and checkout flow under your domain name.

On another note, bandwidth is fairly cheap these days, and £149.00/mo for 1-1/2 gB/day sounds like a shakedown to me.