Psh. I say just get rid of your bed. Sure you'll have to sleep on the floor, buuuut you'll have room for an amazing tank. 
Just kidding. Kind of.
Hahahah. I have never bought a tank new, both of mine were off craigslist
$300 paid for EVERYTHING, tank/stand/canopy/filter/heaters/Coralife T-5 Lighting for my 100 gallon.
Gotta love Craigslist.
Just kidding. Kind of.
Gotta love Craigslist.