Get the best of both. Order GS from the virtual signing. That'll be your copy to keep.
Buy GS on release day from your local bookshop. Read it, then donate it to one of the libraries near you which haven't ordered it. (Yes, I know it seems beyond belief, but there are actually libraries which haven't seen the light and don't own all of Jim's works.)

$27.95 - that isn't chump change but it's roughly comparable to a casual dinner out for two.
Wouldn't you rather give up the one night at a restaurant to instead pick up a Burger King burger for each of you, then scurry home and curl up to read it?
And by donating, you could be spawning any number of future fans from that library offer, who'll become just as dedicated as we are???
And Jim's smidgen out of the two purchases will be going toward keeping him focused on what we want him doing, namely writing. No sense in letting him get dreamy-eyed about putting down the keyboard and finding something else to do in his life. Something less painful than writing, like bamboo shoots under the fingernails, or testing out beds of nails for mystical yogis...