Need information: best way to capture images of my artwork for prints DSLR or SCAN?

I have a bunch of original artwork I’ve created over the years that I’d like to have on file so I can get prints made.

I mainly use acrylics and pastels. but Am starting to work in oils and watercolors.

Some can fit a scanner. but many are larger like 17“x14”

Would it be best to use the scanner for the ones that do fit?

Questions:
1. Is scanning the image better than taking a picture?
2. Should I do it myself? Price difference?
3. What camera or scanner to get?
4. What would be a good way to have the prints made? Online or ?

I’m trying to save on the costs also.