It could be a $1000. gun, but it just might be a $1500. gun too.
In January, I sold one on the EE for $900. In less than six hours I got something like a dozen "If it's still available, I'll take it"' responses. Over the next few weeks, despite the "SOLD" notice, I got dozens more "If the deal falls through, I'll take it" messages. You might consider the fact that - over time - STI jacked their prices markedly, and that STI has now stopped making 1911 variants altogether. I'm guessing that my $900. valuation might have been low (by just a bit).
YMMV