Seems like a fair price,Seems like a fair price you have there. If you wanted to spend a few more bucks, you could get a Lang Patio 48 reverse flow that would be able to either grill or smoke and has a lot of cooking space, but its about $400 more unless you order it with out the legs($200 more) and build a custom brick stand to receive it.
You may be able to find a used 48 cheaper from those who are moving up to the bigger Langs.
I would make a list of what you want to do with it now and in the future, what options are important to you, and stuff like that. Post your price range and ask this forum, I bet there will be a lot of suggestions including the unit you have already picked.