Stan- You may have made more impact than you think. The older JWs DO care about the money. They have been the ones financing both the borg and their local KH for all these years, and they have a certain expectation of how that money is spent. The young JWs in general are not big money contributors. In most congregations it is the elders and the old folks that are regular with donations. Add that to the fact that most old folks have a fixed income and I guarantee they think about the money.
And I agree that staying 30 minutes at your door, when you already told them you were DF says something about their level of interest in what you had to say. Well done!