Here are the various sponsorship levels available:

Platinum:
$25,000 or higher                               Recognition on all marketing materials produced - Prominent placement on website

Gold:
$15,000 or higher                                         Recognition on all printed brochures, banners - logo and link to company page on website

Silver:
$ 5,000 or higher                                        Recognition on banners - logo and link to company page on website

Bronze:
$1,000 or higher                                       Recognition on website

Contributor:
Any amount less than $1,000        Mention on the website