Had a quick look at the campaign and it seems like they were overly ambitious with their stretch goals and the campaign success in general. Most minis didn't look that good to be honest.
About the bitz sites: bitzbox.co.uk is really not that great. I did manage to order twice from the guy and that worked fine for the most part, but usally everything is out of stock for months. With the introduction of AOS, the number of offered bitz from WHFB kits was halfed, which doesn't make the site any more attractive either, but I think that's a problem that all bitz-selling sites and shops have now.
Hoard 'o Bitz was great, before the US post drastically increased the shipping cost to Europe, which makes ordering from the US pointless.