Once upon a time, if you wanted gear, you went to a brick and mortar store, tried it out, questioned a knowledgeable sales person, paid your money and took it home. If it turned out to be defective, you could return it, otherwise it was yours. We were careful how we spent our hard earned money.
Then came the internet. On line retailers could undersell the local music store because they didn't need to charge tax. What always ticked me off was that people would go to the local store, try out the gear, then buy it on line.
Not happy with the boon they'd been given, and seemingly oblivious to the damage they were doing, the on line stores started offering no questions asked returns. The volume they were doing made it possible to work with the lower margins that resulted from the returns.
The local stores are mostly gone, and those that survive, even the once mighty Guitar Center, are pitiful shells of their former selves. There are no longer any knowledgeable sales people, just teenagers who (most of them) couldn't care less about you or the gear they're selling you.
I still do my due diligence before I buy, and if, miraculously, I can find the item I want at a real store where I can try it out, that's where I buy it.
Here in Colorado, if you buy on line and don't pay tax you're required by law to declare it on your taxes and pay the tax. Most don't, but I do.
So, when I buy something on line sight unseen, and decide to return it, I don't feel bad about it at all. The on line retailers made their beds, the bedbugs are their just reward.
That said, I buy primarily from Sweetwater*. Their sales folks may not know everything about everything they sell, but they do get basic training, and if you ask something they can't answer, they'll find out and get back to you, and they rarely hassle over returns, unless there's obvious damage.
If the future of music retail is on line, we could do worse, but those who take unfair advantage are still turds....at LEAST do your homework!
*I tempt the wrath of the forum mods because the business NEEDS a model of how it SHOULD be done, and those who provide that model should be acknowledged!