It really depends on how much work is required @
Gabby. If you want someone to just upgrade it to 1.2 and then walk away leaving you with the job of fixing the style, making sure mods work etc then yes, as said above it won't cost you much. If, however, you want that person to make sure all addons work, the style is up to date, etc, then you're going to be looking at a higher fee.