3
Affordable options
(discuss.tchncs.de)
Here some shoe brands with many offerings under 150€:
These are the ones from the top of my head, there could be other good options.
Furoshiki (mentioned in another comment) are nice but have a narrow sole, prolonged use causes me a bit of pinching due to the stretchy material.
Furoshiki are great and are in your price range.
A community ti discuss barefoot and minimalistic shoes, for whom likes to give their feet freedom and enjoy a more primal feeling while walking, running and hiking.
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Rule 0 of transitioning to barefoot shoes is: take it easy! Give your body as much time as it needs - and then some - to avoid doing more harm then good!
For unshod and actual barefoot content, visit the barefoot community!