domain Please Appraise WashingtonLimoServices.com

Before registering a domain, research how many sales exist on the word (s)
I'm going to say maybe xx, or low xxx

The plural makes it a bit harder. I would do outbound and take low $xxx.
Try and contact wls.limo, seems like a suitable name for them.

There are lots of alternative domains to one like this. Limo, Limos, Limousine, Limousines, Limo Service, etc. It also has a limited buyer pool. I don't see much resale value.

Brad