I personally would buy used over new any day. I've had good luck with used tanks and the money you can save and put into other stuff, makes it worth a little elbow grease cleaning one up. You may not get the exact size you want, but you have to decide how important that is to you. I search craigslist at least once a day using the words 'fish' and 'aquarium', you'd be surprised what comes up, the hardest thing is being the first responder. Also, there's people expecting almost full price and more for their aquarium stuff all the time, you just have to find the ones that live in reality. I lived in Charlotte a few years back, it's no different here in NJ as far as that goes. And, like Rodger stated, try negotiating with the people who have had their items up for a long time. I've found sellers get sick of buyers flaking out and try and take a sure thing just to get rid of their stuff. Patience. You have six months, I find waiting for something to come along always works better and saves me tons of money in the long run.