Seriously? Priceline.com can probably get a vacation package (with flight) for under $500 a person
I stayed at Ballys last time (had a blast) - its in the middle of the strip across from Bellagio and Caesars.
STAY THERE!
There is a band down in the casino every night playing top 50 radio hits - Black eyed peas, Katy Perry, Kesha, etc...
It's cheap and high class
The pool is awesome too