Yeah, any appliance store will. Not like a walmart, but also they probably will, at the very least you could buy it and return it, but just go to an appliance store or even lowes. They will have lots of floor models open and active and will help you set up to test anything else you want because the salesmen are paid on commission.

I think people are so conditioned to the modern lack of customer support from companies (or the strict adherence to "policy) that simple things like this are overlooked. Literally just asking them to plug it in before you buy it... is forgotten by most people. If it's not a secice written on a sign then it's must be impossible right?