Timrhu: Good question.
Prefer to buy locally as floor-standing speakers are the most susceptible to damage in shipping (size, weight) and can be more difficult to repair if damaged in shipping (assumption), especially if: manufacturer is out of business; or custom drivers; or cabinet is damaged (badly dented speaker cabinet not as easy to repair and likely effects performance more than a badly dented amp, assuming electronics are not badly damaged). I worry more about shipping speakers than other gear.
Prefer to audition because IMO speakers are more difficult to evaluate than other gear when they have not been heard. IMO, if electronic gear is scientifically sound, well built, and proven over time, then I have far more confidence that it will sound as I suspect and can therefore be purchased unheard. IMO speakers are infinitely more subjective regardless of their build and specifications. I have pursued used speakers I had never before heard, but only after a lot of investigation and only ones which meet my requirements. I'd rather hear them before I purchase. Hmm ... (self evaluating here) does that make me a tire kicker? After all, if they sound at all like they are purported or I suspect, then I'd buy them. So I don't think so.
So, personal situation and preference dictates much easier to bring into my home different electronics rather than speakers.
But I had not thought of requesting a three-day trial period. I think that is a very good idea. It would better prove to the seller that I was acting in good faith and not just a "tire kicker". Especially if they are holding my money. And if the speakers perform up to (agreed upon) par, then they're mine.