I am interested in getting the J Scott Campbell Variants of Spider-Gwen #24 (ideally just the C variant ) but considering how expensive it has become, it actually works out less expensive to get the A,B and C variants from the J Scott Campbell store.

My questions is A) would you get stuff from his online store; and B) is it better getting signed or unsigned if the signed one comes with a Certificate of Authenticity from J Scott Campbell Store but isn't SS CGC graded.