The first Transformer was hard to find in stores for the first month. Hopefully Asus has learned their lesson and is making plenty of the Prime (they didn't estimate well with the first Transformer and didn't make enough to meet demand). I have no personal preference for online vs. in-store purchase unless you want to see and hold one before purchase. I doubt prices will be very different since the product is new and will probably not get discounted for some time.
-------------------- Lisa Gade Editor in Chief, MobileTechReview