Store looks, not power
The store sells things you can see and nothing you can feel in a fight. Mounts, transmog appearances, pets, maybe a tabard or a title. No gear, no boosts, no consumables, no bag space, no faster XP. If it would show up on a damage meter it isn't for sale, and that's a promise written on the roadmap where it's hard to quietly delete.
It's a hobby realm; the store is there to help with the hosting bill, not to turn a profit. Prices will be low and nothing will ever be limited to pressure you.
The store opens with the realm. Planned at launch: a few mounts, transmog appearances, companion pets, and name or look changes for a character.
What's in · what's never in
MountsYes
Appearances, pets, tabardsYes
TitlesMaybe
Gear, enchants, consumablesNever
XP boosts, levelsNever
GoldNever