Just ordered a new cricut cartridge from the CardCraft-UK website http://www.cardcraft-uk.co.uk/ which has recently become my home for cricut cartridges! Their prices are good and their service great. One of my favourite aspects is that if the product you want is out of stock, just give them your email address and they'll let you know as soon as it's back in stock. I know that lots of sites offer this service but I've never found them to be quite as quick in that promise as this website is.
Can't wait for it to arrive and to start crafting with it. Blog posts to follow I'm sure!