It's a Camara trying to be a true DSLR.......
You're not going to get DSLR picture quality from this or any other non mirror digital camara.- period!
The lenses to the sony Nex are proprietary
Junk- IMO ...
There are favorable reviews on the Camara and some not so favorable.
Point being , when is comes to final pictures- DSLR is what you should be looking into, not something that is trying to mimic it...
For $500, you can easily buy a used Nikon D40, D50 or D60 (or a Canon equivelant) with a kit 18-55mm lens. While not the widest lens, especially for interior shots, you can learn to stitch photos together to mimic a wider-angle lens.
If you're going to use this camera for jobs, I'd get one you're not afraid to 'lose'. Either through dropping/damage
Here's one on Craigslist near me for $25
They're decent cameras and if/when you break it, no big deal!
Make sure whatever you buy takes AAs
Now for a decent camera for the rest of your life, sky is the limit...