I have done it twice, once from Ishibashi - which was an excellent experience, prompt sending, well packaged, nice sturdy outer box which had no "speed holes" in it on arrival, and prompt communication throughout. Great pics on the website, what you see is what you get. I was delighted with the overall experience and will definitely use them again next time they have something I fancy.
The other time was from a private seller on Reverb. Again, can't fault the experience - I appreciate that one transaction from one random person doesn't mean much on a statistical level, but I found a good 'un - great comms, packaged the bass well, and even put some keepsakes/nicknacks in with the bass which was cute and made me smile.
So, that's two from two. But deffo, bigging up the Ishibashi here.
I would be wary of these "personal shopper" types on ebay - you sometimes see the same bass with the same pics being listed for varying prices. I believe that is people speculatively listing stuff up they've seen in shops (I've seen Ishibashi's pics being nicked sometimes) and they're basically a go-between, and will list it for what the shop's selling it at plus whatever they reckon their expenses are. But if they've got great feedback, then I guess it's fine? I dunno, I think it's the fact that the same bass with the same pictures being listed multiple times by different ebay accounts that's putting me off, just feels a bit sus.