[Duugu]

Originally Posted by morpheusxeno This addon would really take more than 5 hours for you to write? What would be a reasonable payment?

Absolutly, yes. Just to build a final, bug free, feature complete version of the UI you designed below could easily take 5 hours or more.

Originally Posted by morpheusxeno And just to restate... There are addons that do some of what I want, Some features just have to be added... Guild Roles - Allows you to set the role of a player in the guild roster

GuildRoles doesn't have any copyright statement. Which means it is "all rights reserved" as default. Did you already contact the autor and asked for the permission to use the addons code or parts of it?
Plus my personal experience is, that working into and enhancing the code of others often is more effort than building the full thing from a scratch.