Bullzaye,

At the present time, $425 for an M18 is a fantastic deal. The most recent one I saw on Gunbroker went for $604, and that doesn't include shipping and FFL transfer fees. Everybody and his brother wants one of these or a 17, it seems. If I were in your shoes I would buy it even if only for resale.

By the way, I may be wrong, but I believe that the 18 came only with the 4" barrel, since the 17 typically has the 6".

Andy