Having worked in the tower industry - not all tower with lattice is automatically Rohn.
There is all different grades of tower, and my guess is that this is TV tower - not the heavy duty Rohn - but I could be wrong.
I also could not blow up the picture to get a closer look - to see if it could be a Rohn 45 series of tower - you never know.
Some things to look at which will distinguish one tower from another, the size of the legs, the width of the legs the bolts that holds it together.
If I am not mistaken Rohn 25 uses two different size hardware - bolts to hold it together.
Some TV towers do not - even if it has lattice - it always isn't ROHN...
http://www.rohnnet.com/rohn-25g-tower
Just as you cannot appraise a automobile or a house or a piece of property over the internet - so too you can't appraise tower.
Two rules of thumb - if the exterior is pitted - it is no good.
If the interior has rust it is no good.
Unfortunately I don't take my own advice.
The last 200' of tower I bought I paid $10 per a 10' section.
I also bought 36' of TV tower for $10.00 a section, and by the time I got it cleaned up and painted, I had $100 into each section.
That is usually the going price - unless someone wants it bad enough to pay more.
Most times most building permits will not allow you to put one up - due to building codes and covenants -and unless you are a licensed amateur radio operator and even then, 40' is probably as high as they will permit you to go - unless you live out on a farm someplace and own lot's of land.