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It shouldn't be a problem buying a used barber hone, or any other for that matter, just make sure whoever you buy it from flattens it before sending it to you, if needed.
If you find one you like,...

Hi, and welcome to SRP.

A Dovo from the invisible edge is a good choice for a starter kit.
It will not stay sharp all that long to be honest, due to lack of technique.
Stropping takes a wee bit...