From the In Progress page
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20 new shop machines are currently being made, for trade-skills only. The shops themselves are actually finished; we’re now waiting for our World Designers to make room for them. There will be separate shop machines for components, tools and recipes. Faded, Bright and Shining Nano clusters will have their own shops, and so will weapon trade-skill components, construction kits and recipes etc. etc. This move will also make the existing shops less crowded. Some bonus shops might also pop up... but we leave that for you to explore, when they are due for patching
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The worldbuilders need a place to put these new shops?

Try the bazaar in Last Ditch (within outermost wall). Plenty of room for them there.

There are also a variety of unimplemented doors throughout. Pop a Tools N Stuff sign next to the door and go for it. There are also a number of redundant shops throughout the major OT and CoT cities. Replace a couple of them. How many Basic Quality General Stores does Omni-T really need, anyhow?