PB,
I think they were on the lower end of your guess...however, they get you for frt. on each item...stinks...I yelled, they sent me a free locking knife...since they had not explained the shipping charges to me...a VERY nice knife! The mgr. who sent the knife was a great guy.
Call the 800# (if they have one) and they can get you an exact quote on the mags.
Oh, and by the way, the 8045 is SWEET. I'm not so crazy about the trigger, I may have some work done to it someday...but what a shooter. I have the full size.
Good luck!