Having owned multiple naked GL1100's over the years, I also had my eye on a Valk and pulled the trigger on a non-runner, but relatively clean project bike for $2350. After getting it roadworthy and going for multiple rides, I decided I liked the GL1100 over the Valk, and sold the Valk for $3300, about what I had into it including the basic needs (tire battery, etc.) and some cosmetic upgrades. Pic of mine is below.
The one in your pic is a tourer model, a good middle ground with luggage and windscreen, but not so bulky as the Interstate. I had one person who wanted to buy my luggage and screen for $800 How much are they asking and what is the mileage? Also, how much do you like projects and/or flipping bike?
here's my summary
Plusses
Super smooth engine once it's sorted
I liked the look, just enough chrome.
The engines do seem to last forever when reasonably maintained.
Negatives
If the carbs need work, there are 6 to worry about. Mine came ready to go.
I'm 6'3" and the low seat position made my right hip (a weakness of mine) too tight.
It's heavy to move around the garage. OK once underway.
As with many bikes, many owners love them and therefore overvalue them when selling.