85us$ for a dating site is quite a joke, even if it is only text with no graphics. On average, the smallest dating site cost around 5000us$ to build, and at least 1000us$ per month to have any chance of being successful. On the other hand, once the site is built, it requires the creation of at least 1000 dummy users to increase chances of getting members.
I have taken part in the development of AdultFriendFinder, nowadays making 4 million US$/year, and I am developing another site for one of their directors ("affairs-wanted.com"), with similar budgets. You would be better off asking to get SHARES in an existing/developing site, something I could help you with.
Best regards,