I purchased the Revell 1/72 kit from
www.Greatmodels.com. It came in just a few days, and was in good condition.
They're also offering a 1/72 Gato from the same mnfr. later this year.
Plan on building it with minimal instructions though, because there aren't many. Of course, putting it together is relatively easy, it's the details that'll take time.
Being familiar with the VII-C's in SH-III is definately an asset as well.
Good luck, and happy hunting!