Originally posted by NicoleC I've been asked for a donation to a giveaway for an event. In this case, it actually might be a positive marketing thing for me if my costs were kept low,
In almost all circumstances giving away your work to charities in the hope of a return from the marketing is a complete waste of time. The only time I have seen it work is where the giver was consistent, in that they had a presence at the same event year after year. Advertising/marketing is about the number of 'impressions', I think the number is in the 20's at this time. As in if they see your message/name less than 20 times they won't remember you the minute they walk out the door.
Now if they are willing to put you on the agenda/brochure/pamphlet as a "sponsor" then that improves things.
So IMHO if the charity is worthwhile and you would support it, or donate to it anyway, go ahead. Take the deduction on your taxes and feel good that you helped, but don't expect much of a return.
As to presentation, either go big or don't go. If you are seeing this as a representation of your work that a potential client might see, then take it to the local frame shop, get it professionally matted and framed and assign the 'value' of all that plus the print as the value of your donation. I would not in any circumstances donate something unless I was proud to see it hanging on someone's wall. And who knows, maybe a client will see it and make another purchase, it could happen. Just my opinion of course, YMMV.
Another thought: go on Fine Art America and price out a similar size print, matted and framed from a couple of artists and see how much that would actually cost. Then use that for the 'value' of your donation. Sorry, if you already knew about that.