Hi Sue,
As was suggested, look through the info available from the Scotty club for value and weak points of these models.
If you just want a trailer to use/pull around, it may be okay.
However, you wrote;
It doesn't look like it has any water damage. The trailer is a bit rusted.
It is rusted, as you noted, worrisome as the electric panel is rusted (inside where moisture should not be present in amounts needed to do such damage...) also in sad shape is the door hinge.
While it looks reasonably good overall, It
does have water damage.
Several of the photos show substantial water damage.
Cracked panels, and a little swelling may not "look" like much damage, but it must be remembered and considered that the water that damaged the innermost layer of the plywood, traveled from the outside, all the way through the wood to get there...
You may be able to re seal the corners and edges outside to prevent further damage, but if you want everything to be as new, you have a big project ahead of you!
Rob
Waiting for "someday" will leave you on your deathbed wondering why you didn't just rearrange your priorities and enjoy the time you had, instead of waiting for a "better" time to come along...