Some states allow consumers a set time for complete refunds. Never mind that I rarely can find a dealer that truly knows all the intricasies of todays complicated products. One often has to take the item home, go through all the manuals and then hope that the manuals are correct and then hope that the item works as described. Furthermore these products have to compatible with the consumers existing gear. That most of the on line retailers (dealers aren't usually that much better) are clueless about the products their peddling never mind the ones they don't. Many online retailers don't even have an audition set up, set up.
If one were to buy a garment on line that didn't fit, would you expect to pay a restocking fee?
Would you expect to pay a fee to test drive a new automobile?
We are talking about a performance instruments. How are we to know how something performs without trying it? The specs? Internet sales could be viewed as bids.