We'd love to get more involved in diversity organizations (e.g. AfroTech, Lesbians Who Tech, Women In Product, etc.) to participate in their career fairs, conferences, etc. to become more present in these communities early on. However, we're a start-up and are on a tight budget. Any advice on negotiating with event organizers when they have minimum financial commitments (sometimes in the tens of thousands of dollars) for companies to get involved?