It works for both and it depends on the price. If it's cheaper on ebay and the seller is good then go for it. Also check if it's in good condition. But if you want it brand new with no previous user thats cool also. In my opinion I brought a use keyboard that was old and dusty at guitar center and they forgot about and it worked good. Hope that helps.
In my opinion it doesn't all that legit. Me I prefer a personal buyer. Someone who sells occasionally not in bulk. But it's really up to you. Just my thoughts.
good look homie.... i'm gonna take that into consideration from now on.... i ordered me a mic from amazon but the store was musician friends... they sent me tracking info but i will now look into personal buyers from now on.... thanks bro