I got sorta lucky with my the box of Blood Dragons I picked up off the shelf today. I finally crumbled and ended up buying them. I had contemplated getting the chinese knock offs (£25) but would have had to wait ages (I'M IMPATIENT) plus the actual image of the imitations doesn't look like perfect imitations, they look just less... well anyway... So turns out in the box they had put the same two sides for one of the horses. So I have four knights and two left sides of the same horse. So they've ordered another box in for me and I'm effectively getting nine Blood Knights for the price of 5. I could be cheeky and make a cast of the piece when it arrives and then am able to make the first horse that was missing, so 10 for 5.
However, there is another issue with the box, on top of it's absurd price. You only get two lances. So you can ONLY make 5 Knights with full command. You can't make just five add on knights say if you want to bump your unit up to 10. The guy at the store wasn't impressed, even before we found out the horse half scandal he was practically already calling mail order to complain about "warped lances, we need some 'replacements',".
Kind of lucky by being unlucky.