Ahoy Ravanos!
Like anything else, 'twill depend upon yer budget and the degree of screen accuracy ye seek. Arrbay has 'em fer less than a hundred- from China or Singapore, mate-up to Yordreem's Screen Accurate perfection, which is quite a bit more, but completely worth the price!. It depends on yer need, and yer pocketbook!
As yer likely know, Jack's vest and wig has changed fer the new movie, but so far, I believe his frock coat is the same.
T' hook up with more Jack impersonators, I'd recommend going here: Keep To The Code.
Lots o' Jacks- and great tips on costuming, Jack's props et al.