Saw one in Columbus here that I wouldn't mind for 300 or so last Friday. Came with a P38 holster. No cleaning kit, no spare mags. The 400 doesn't sound like that great of deal to me unless its pristine. The one in Columbus was used but had all its finish....just had lots of wear on it.
I would jump on that deal, I haven't seen many for sale locally and when they pop up are in the $400 plus range.
Debating taking my P290RS in for trade in on it. I would prefer something with some historical styling to it over the 290...