Tradery

Five vending blocks and two display cases: bread for money, a diamond sword for diamonds, a server-run golden apple stall, potions, and a stall that buys cobblestone.

Vending blocks sell while their owners are away - mining, sleeping or offline.

Look at a vending block: who sells what and for how much, plus the keys to trade - no window needed.

Sneak and hold right-click to keep buying, about five lots a second. The action bar adds the whole streak up.

Sneak while looking and the hint shows the item's full tooltip: enchantments, potion effects, durability.

A plain right-click opens the buyer window: exact stock, what you can afford and your balance. No item slots, nothing to exploit.

Goods and price by example, money or item price, buyback, a facade from any full block, the showcase animation.

Any full block as the base - spruce, birch, cobblestone, polished andesite - and goods that spin and bob in the glass.

Copper, silver and gold coin ore in stone and deepslate. Mining it puts money straight on your balance.