Since I work in the Community Relations office in our company, we are constantly bombarded with requests for donations. I do know we are asked quite often to underwrite some of costs. For instance, we have been known to donate printing costs for the program. You can do "levels of sponsorship" and the higher the level, the more they will be acknowledged. For instance, you might charge $25,000 for a Platinum or Event Sponsor. With that sponsorship they could get a full page ad in the evening's program, table recognition, table for 10, mention in the nonprofit's newsletter, etc. Lots of bennies. You can charge a per person cost and a table cost. Normally table costs are a "buy 9, get one free" type of cost. Or you can charge a little extra and throw in an ad for free (1/2 page or 1/4 page) depending on the table sponsor level.
Also, don't worry too much about cost, especially if it is black tie. Most nonprofits in our city think nothing of charging $120-$250 and up per plate and they get it! Depends on the nonprofit and their target donors.
If you need some suggestions, feel free to contact me at
knislek@nationwide.com