It depends on which package you select. I got the 80% leather package - (the small side pieces are vinyl) and chose to get the custom logos. I spent a little over $1000. If I didnt get the logos it probably would have been under $1000. I think the pricing starts in the six hundred dollar range if I remember correctly.

from their website:
Q: Are your kits made entirely of leather?
A: Our kits use a combination of both Italian leather and automotive-grade vinyl, often exceeding the leather content of a factory leather interior. Our average interior boasts a generous 55 square feet of leather! We also feature the best grain match in the industry.