There is a difference between abusing the return policy of a store and properly exercising it. I am sure that if the Home Depot finds that having a generous return policy is bad for their business, they will change it. Until they do, it is my right, as well as every one else's to take advantage of it. When I was doing a major project around my home and wanted to buy a cordless drill, I went through 3 drills before settling on my current one. It ended up being a more expensive drill than all of the previous ones, but the first of the bunch where the chuck does not vibrate noticeably with a very fine drill bit. That is something that you can only find out by trying a piece out. According to all the paper research either of those drills should do the job, because none of the drills advertises the product as producing slight chuck vibration, any more than a keyboard is advertised as having not-quite-so-realistic sounds, or being slightly more difficult to use than the competition. That is why the salesman at Home Depot was telling me to buy a drill and try it at home, and if it does not work bring it back. Similarly, it makes sense that a salesman at the GC tells me to buy a product, try it out, and bring it back if it does not work out for me. As long as I buy the product with the intention to keep it, rather than intending to use it and bring it back, I am in compliance with the store's policy.
I think it makes definite sense with something so subjective as a keyboard. With each keyboard there are dozens of factors which make us like or dislike the instrument: key feel, sounds, styles, ease of navigation, ability to store presets, expand the memory contents, etc. The only ones which we can really judge before using an instrument are size and weight - everything else comes as we get our hands onto a product. It only makes sense that a user want to try a product in a real-life situation before knowing if it will work for him or not. That is why stores with generous return policies, such as GC, offer such a stiff competition to the established local stores.
On the other hand, I noticed several of our members from Europe are able to arrange with their dealers to borrow an instrument for several days, and then bring it back, without making a commitment to buy one. It is interesting that the local dealers in Europe can afford to do this, but the ones in the US can not.
As for buying a car, I will usually try to rent for a few days a vehicle like the one I am interested in buying, to get an idea how it drives (or will drive after a few thousand miles). Few of us get married without thoroughly evaluating our prospective spouse for a while (often with at-home trial), and some even take a refund. And as for that tankful of gas, the retailer who sold it to may be liable for a lot more than the price I paid for the twenty gallons: if it is indeed substandard, the dealer better be prepared to pay for diagnostic tests and repairs to my car, besides losing their state license.
Regards
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Regards,
Alex