What is the process to demo speakers?

I’m dealing with an acoustically challenged room in my new house and am considering Wilson Audio Duettes. The room requires speakers be up against a wall or inside a bookshelf. I went to Overture in Delaware this weekend and listed to the Duettes, I thought they were amazing. However, I was in a listening room designed to sound good, much different than my home.

I’d like to be able to try these speakers in my house before I commit to purchasing them. Is this a reasonable request to make of Overture and does anyone know if they offer this kind of service? Also, if this is common practice for good audio stores do they charge anything for the service of letting their customer try equipment before they purchase?

I’m fairly new to upper end equipment so I appreciate any advice you can offer.

Ken.