i think that sort of thing is a great idea and we've had some success with a similar type of fundraising. our band has been collecting donations on the internet with different price points to show our appreciation. for example, $15 gets you a pre ordered CD, while $500 gets you a dinner party prepared by the band. we have everything in between as well as options such as $5000 which gets you into a studio with us to record a song (and that option has been bought too!). so far we've found that most people are donating inbetween the set price points. aside from getting a CD and t-shirt, they're just happy helping out the cause.
we're over halfway to our goal of $40,000 and were able to go to nashville to record. along the way we made video blogs everyday and sent them out to all the people who donated so that they would know exactly how we were spending their donations. this proved to be crucial as many people were thankful to see that we weren't blowing it carelessly and the progress of the videos even prompted people to re-donate.
long story short, it's a great way to generate funds and it also creates a way for the fans to feel more connected to the band.
check out
www.teamtrance.com