I've only been playing about 2 days now, but I'm liking it so far. Very much a throwback to Baulder's Gate, but with D&D 4th Edition elements thrown in. The detail in the world's backstory seems really flushed out as well.
Just saw the $20 price tag at GS, don't know if it's a sale or a new reduced price, but it isn't in the GS weekly ad. Also, all other major retailers are carrying it for $40+.
I would very much recommend to fantasy/Role-playing fans.