Yep, I'll be painting up my Chaos forces as well. Chaos is actually the only faction from "the old world" that I actually liked, so I'm looking forward to painting them, but first I want to finish off my Stormhost.
There are a couple GW shops around, but they are at least an hour or so drive away. I'm tempted to get in contact with them, but unfortunately, though I speak Spanish pretty well, I'm not sure how good my "wargaming" vocabulary is; so it might be difficult. We'll see, perhaps one day I'll drop in on one of them and see what's going on.
And yes, ebay is a great resource for picking up units from the starter set that people break up and sell. I think they cost about 1.60 GBPs per figure, so you should be able to get a good deal.