I'd recommend...to anyone possibly wanting one of the new Galaxy S Tabs to just wait about 3-4 months before buying one if you can. Samsung Tabs drop in price quickly and you'll save some dough.
I'm not hating on Samsung, in fact, I just bought the now "last gen" Galaxy Tab Pro 8.4 which was released just this February. It was priced at $399.99 at launch, just like the 8.4 Tab S model and I snatched it up at Best Buy for $279.99.
Samsung is currently on a release cycle of new Tabs every 3.5 to 4 months. They have three unique lines with the S-line beginning the fourth variant (Tab, Note, Pro and now S). So if you can hold out, I'm sure these S-line tabs will be cheaper sooner than you'd think!