I have worked for an long established non-government world relief organization, Mennonite Central Committee. It has many relief auctions through out America and Canada each year. A big source of revenue are the quilts, the Fresno California auction raised $180.K this year ( it rained) but it has raised up to $250 K, not all is from quilts, donated Mustang, food sales, etc.
The MCC community is well known for its' accountability so people donate to a cause. I donated a quilt and it sold for $95 , I wasn't there but they sent me the information. Yes, quilts don't sell for the time and money spent but I did get the satisfaction that someone liked it enough to pay that amount. I once saw one go for $12 K, it was an applique Baltimore Album, hand quilted.
Quilters will donate to projects that they are familiar with and have a passion for.