I had a sand boa a few years back, and I had horrible luck with him.

He was a rescue that I "adopted" from a pet store because they had him for months and he never ate, and was in rough shape.

I had him for close to 6 years. He would do really well for awhile, he would eat like a hog and put on weight then would just go downhill really quick. He had this weird infection that just kept on coming back. After about the fourth time of this happening the vet and I decided to put him down.

After that experience I don't think I'll get a Sand Boa again.