The mount is starting to show up on live realms today. Some folks that have very deep pockets are picking them up for the maximum cost. Reactions are mixed. Most people will target the mount, look through the vendors, and some will ask to get on it for a quick ride. Others will /point /laugh.
The vendors on the mount are both a reagent vendor and a food / general goods vendor. The reagent vendor allows you to repair on the fly, the food / general vendor lets you pickup food and water when ever you need it, and both allow you to sell stuff on a whim. The general vendor also has unlimited arrows and bullets.
It's very nice for leveling in some ways, and will be quite nice for raiding in that you'll always have someplace close with reagents and other essentials.
But is it worth it?
At 20,000g the price tag is pretty darn steep. But personally, I think the mount is worth every copper. I'll be dualboxing alts again soon enough. Being able to have this to carry my alts around and provide quick reagents and vendors will really help cut down on my travel time.
So what do you think? Gonna buy one of these mammoth mounts?