There are a number of unfortunate circumstances necessitating a return of my Apple Watch. My question is, can I return it to an Apple Store? If so, how long would it take to get my money back? And also, how long do I have to return it? I absolutely love my watch, and don't want to return it, but for to some unforeseen financial issues, I have to. TLDR; what's the best way to return my watch?

EDIT: I really appreciate all of the information guys. This community has really been the best. It sounds like eBay may be the best way to go about this to make a profit, but if anyone here wants to buy, I'd sell the full bundle, 42mm SS Milanese loop, and black sports band for $900, just DM me if interested. Won't be back on desktop until tonight 10pm pst to get back to you. First come first serve.