Probably better in the ask the cuemaker section, but in my experience, there are some imperfections you can take care of yourself.
For example, a slight cloudiness or light scratch, a polishing compound with plenty of rubbing, followed up with either an acrylic sealant or high quality wax will do the trick. It takes some elbow grease. This assumes it's not an incredibly valuable, collectible cue.
But you asked about a ding. If it's on the butt, rather than the shaft, which I assume you meant, it's pretty hard to get a ding out without the usual refinish and respraying. Maybe there will be other opinions.
All the best,
WW