Low level gear should look scrappy and poor and progression should be slow.

I'm fairly sure cleric and fighter are wearing a cosmetic set that won't be achievable in-game, so you can disregard them. Tank and ranger look right about what I'd imagine lvl~15s to look like. The "set" that Steven equips later is also a cosmetic set from a bundle.

Never forget that most of the gear they're showing off is just cosmetics from the bundles. I personally dislike this practice, but Steven gonna Steven and promote the game with false gear.

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https://ashesofcreation.wiki/Titanbark_Mail

Here's Steven's personality

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People will wear costumes from lvl1, so you'll see epic stuff right from the start of the game. It's inevitable with a cosmetic shop.

But it also fits the lore of the game, so I care about that even less than usual.

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https://ashesofcreation.wiki/Costumes
Costumes (and pets) don't have a level restriction. Other cosmetics require an in-game item to be obtained first.[7][8]

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It's an alpha. And it's Steven. During the first video he literally GMed himself the pants. Nothing is real here. These are literally the items from that cosmetic costume, just in parts.

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It doesn't matter, because literally all the cosmetics they've sold so far have been costumes. So all the people with high tier bundles will be able to equip their cosmetics right from the start.

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I read that as the exact opposite. As in, you have a "costume" slot and that costume just completely covers whatever you're wearing, as opposed to the usual cosmetic of "boots will replace your boots, helmet will replace your helmet, and so on".

But even if it requires a set of gear, I'd imagine there's gonna be either some ultra basic set that you get as your starting gear or just the very first one you can buy/get from the first vendors and quest givers.