Dating Website Design

[justinOrel]

Before you find open source software, You atleast need to start with a set of high level requirements - front end pages and features, backend system admin and features, if possible references to existing sites/systems that do fulfil some parts of the requirments. Then you can start to ask reasonable questions to build up a picture and give a reasonable ball park figure.

Before getting this far there is no way you can give a resonable figure, margin for error is way to high.