I have an idea to start up a wedding budget planner in indonesia, online of course. Most of indonesian people have a problem when they plan to get married and thinking about how much they have to spent money and who, where and what vendor with the best price for the big day such as event organizer, place for rent, catering, souvenir, documentation, etc.
The big picture is people come to our site, submit their budget, they can choose the best vendor that already have had signed up to our site. people choose their desired event organizer, place for rent, catering, souvenir, documentation, etc in a wizard (one by one step) then they came up with estimated budget in the end. Estimated budget can be more or less than their budget. If they agree, they can book all the vendor that has been choosen before.
Business side is from member fee (yearly fee), vendor sign up (monthly fee) and of course advertisment.