Epubor is promoted by spam. Don't buy anything from the spammer. Chances are that you will pay for free open source software that is sold illegally.

Spammer:
The IP Address is: 58.48.146.240. The host name is: 240.146.48.58.broad.wh.hb.dynamic.163data.com.cn.

Software promoted by the spammer:
PDF DRM Removal (removedrmfromepub) review
epub DRM Removal (removedrmfromepub) review
Kindle Drm Removal (removedrmfromepub) review