I personally think there's quite a bit inherent issues with a 26"" WSM.
Weight-wise, for shipping purposes it probably puts you out of UPS range and that would then really eliminate Amazon as an effective outlet.
Also, price-wise you'd probably be looking at $700-$800 if not more, assuming that the 22 WSM is 4x the amount of a OTS and about 3x the amount of a OTG. Based on the cost of the 26 OTG you'd be looking at $900-$1000, not including tax / shipping.
In all honesty I don't think Weber can make a vertical smoker that size and really have it competitive. I think the insulated box smokers will be more attractive once all is said and done.
But I'm just a BBQ noob...what do I know.
Proud owner of:
22.5 OTS, 22.5 WSM, SJG (and soon to have the tamale pot mini-WSM conversion built)
Stealth gray Thermopen