Large Craigslist tanks

[clifford]

So I've been seeing a lot of large tanks show up on Craigslist lately-- ones like:

http://seattle.craigslist.org/see/for/5011637194.html

http://seattle.craigslist.org/est/for/4991603238.html

http://seattle.craigslist.org/see/grd/5009235140.html

I'm thinking it's about time to jump on a larger project, but I've never had a tank of my own that big. Current max is a 75. (I did have an 800 gallon bass/sunfish "pond" in the basement of the last house, so I've kept large systems, just not ones with glass/plexi sides.)

Are there good reasons not to buy a big used tank? Particularly things outside of what would be similar for small tanks? I'm not worried about resealing some silicon or something simple, but I'm hesitant to get a random used tank when a problem with it could put a few hundred gallons on the floor. If you have experiences to share, please do!

Cliff

 

[keman]

The 93g rimless cube I have for sale isn't as large as those, but it is a new tank.

 

[JimmyZ]

If those prices were cut in half they would be more appealing and probably move faster..