Keep in mind, you can buy your GH1 and eBay the kit lens. Oddly enough they seem to get a pretty high price on eBay! That might be cheaper overall than buying a body from overseas, if you feel like screwing with it. eBay can be a pain, and they take a good chunk of it in fees. :angry:
I don't see a problm w/ that.
However in the US you do have a florid market for the kit lens (eBay, Craigslist, etc) so you may still be better off just buying the whole package from B&H, Adorama, etc and selling the lens, as the previous poster stated.
In EU we have do not have (yet) a liquid market for those kit lenses, so we are better off buying the body only...
IMHO, YMMV