And it’s nice if a group of people (or a parish) offers a periodic contribution for room & board, in exchange for teaching for example - but it can be a beautiful gift to them, a surprise to them, to offer to give what is from God, for free.
What we have to give that is worthwhile, by the way, is from God and was given by Him at no cost. We might also have “education” for which we have paid - but what we can give from God, out of His blessings and graces given to us for free, that is most precious, and most valuable. That, from God, is holy and ought not ever be considered a commodity to trade on in the marketplace.
Money is the life-blood of the godless, secular world. All who are trapped in that world understand the place that money has in that world. To be free of concerns about money is shocking to men in the City of Man; to rely on God to provide is a very powerful witness to faith - more powerful than pretty words.