Great to see another one as well!
Oh yeah, of course. It's the rarest JJ box as far as I'm aware. :P I've also been after it for years.
I might be willing to spend more but it depends how much, the condition, etc.

I have:
JJ1 B&N box
JJ1 floppies
JJ1 holiday hare 94/95 mail order floppies
JJ1 CD / Manual
JJ Trilogy
JJ2 US + Strategy guide
JJ2 OEM (both versions I believe)
JJ2 EU/Spanish
JJ2 He's At It Again box (friend is holding onto one for me)
JJ2 Secret files
JJ2 Holiday Hare 98 original
JJ2 Holiday Hare 98 Kmart
Animaniacs: A Gigantic Adventure (US)
Battery Check
JJ Poker Broker (Not a real Jazz game but still notible to me for the title)

I know Im missing various 3rd party releases of JJ1, but really the main ones Im missing is the CC box, JJA box, and the plush.