If you're talking about having professional movers move your tank I'd highly advise against it, especially if you have a reef tank. Chances are slim that you'll luck out and happen to get a group of guys that understand and respect how much money is tied up in your hobby, and have the knowledge of packing, handling, and transporting live marine animals.
I'd suggest contacting your favorite LFS. Most offer tank cleaning services, and tank moves typically fall under that category. However, for a 180, you'll pay a decent amount; most LFS's tank service fees range anywhere from $40 to $60 per man hour (depending on the store). They'd have to send out at least 2, but possibly up to 4, people to move a tank that size. That'd equate to $160 - $240 an hour. Also, if you decide to go this route make some calls and get something set up ASAP. Most LFS's need a few weeks notice to schedule in new customers, especially when it's something of your scale.
Just plan ahead, and do as much of the tank move on your own to limit costs and the chances of something going wrong. If you have the ability to get into your new place early, set up temporary holding tanks for your livestock ASAP. When I moved my system this past summer, I was fortunate to be moving it into a new tank, but I still had to use holding tanks for a couple of weeks b/c not everything with the new system was totally set up. It's a major process, so don't rush things; if you do, then your livestock might suffer, and you'll definitely regret it later.
