Welcome to the forum and thanks for asking our advice.
I would have jumped on that gun with both feet and kissed the seller on the mouth. (well, maybe)
You got a GREAT gun for a terrific price.
I believe there were only 5,000 of the 5.5" ever made. They are favorites for handloaders who want to push the power envelope and highly sought after. A bit heavy for everyday carry, but the 5.5" barrel makes for an easier carry than the 7.5" barrel. If you want to hunt wild pig with a handgun (up to a reasonable size limit), this is the cat's meow.