One of the local shops here (Seattle, sorry) carries Foundry. The only lines that are available for retail are the blisterpacked ones, and then not even all of those. The upshot is that the range available for retail in stores is pretty limited.

Also, I have to say that I'm not a very happy camper when it comes to the Foundry blisterpacks. Most offer a variety of poses, but the poses are sometimes so distinct that they won't mix in the same unit (i.e., one figure madly charging while frothing at the mouth, another standing at attention, another picking fleas off the regimental mascot). This creates a certain amount of "wastage" -- figures that go into the leadpile that you would never have bought as singles but are stuck with because they're part of the mix.

The latest lines are better. The figures are designed as a variation on a theme, e.g., all advancing, charging, laying about, etc. so your units look natural, not like a chorus line or bedlam. As far as getting them, I recommend giving mail order a try. I've received orders from the UK within 10 days of placing them, always complete, and Foundry does such a nice job packing them, you'd think they were sending you Waterford crystal.