Impressive record of a coin collection using a flatbed scanner. It is easy. Don't buy a cheap flatbed scanner. 600 dpi is not enough for a flatbed if you intend to enlarge your scans and print them at letter size.
User friendliness are important aspects of today's digital imaging equipment.
Not everyone is a graduate of the Rochester Institute of Technology or has attended courses on pre-press color management technology. Thus once you have your scanner you might consider trying out other software. The person who did this scanning had never used this scanner before. She had never used any other scanner before either. Every dollar you invest in a flatbed scanner can potentially be returned a thousand-fold when you sell your coin collection.