The paid is PRO, this means
- security is better
- optimized (better speed)
- maybe include extra plugins
- for a period Pro support and updates
- better UI, this means a very atractive site
- and maybe more
You must have a person with taste (maybe woman), If you have the taste you must buy or find free images, and configure the proper colors that tight to your site’s activity, and to have a self-explanatory easy to remember domain.