For future reference, IKEA has a nice display case called "Detolf" and it's the same display case I use. I absolutely love it and it's a lot cheaper than I thought it would be. I was expecting to pay around $100 or so but it was only $65
http://www.ikea.com/us/en/catalog/products/10119206/
The only downside to it is that it has a magnet that keeps it closed so when you tug on the door to open it, the case shakes a bit and a figure might fall over if you don't have a stand for 'em.