Hey Guys!
A 13' Silverside? Really sweet little trailer & Scotties are regaining popularity!
It really depends on how sound it is, and how much water damage
Most Scotties require extensive rebuilding due to water leaking in around the side moldings into the walls and particularly the front & back.
John Serro in his infinite wisdom (read cheap) decided to use spiral nails to attach this molding with. The spiral nails back out, the molding pulls away and water gets in to do it's thing!
To get an idea how bad it can get check out all the rebuilds here:
http://www.nationalserroscotty.org/
Really check out that top/side molding & give us an idea of extent of water damage.
In really good POLISHED state I've seen 'em $3000-8,000.
If it's a basket case with lots of water damage you'll spend $5,000 just to fix her up,
Good Luck!
Cheers,
Coop