Today I discovered that a site called "Film Jackets" exists and yes, it sells replica jackets from movies. If you're wondering how long it'd take such an outlet to have Finn's sweet piece of leather available for sale, the answer is "now". Or "immediately". I'm getting my tenses confused -- you can buy it today.
According to Film Jackets' product page, the design is "Screen Accurate" and made from real leather. It comes with five pockets -- two inside and three outside.
The collar is also "erect". Good to know.
Don't worry about sizing -- it goes from XS to XXXL, which should cover most people. The only issue, as it is with ordering stuff from the States these days, is price. The good news is shipping is pretty cheap, ranging from $US7.99 ($11) to $US19.99 ($28). The jacket itself however is $US179 ($253), though that's not really surprising.
The reviews for the jacket are almost universally positive and there's a guarantee if you don't find yourself piloting an X-Wing or blowing up a Death Star within 30 days. What's not to like?
Photos: Film Jackets