As near as I can tell a couple of folks took me up on that challenge and then some. I think that two folks, myself included, "only" donated $8. By my math the minimum donation level (direct through the site that is) was $8, which I think it pretty awesome.
Also awesome is the fact that there were a LOT more than 8 maps. I counted 24 contributions, with some being multiple maps or one map presented several ways. If you stay with me on the math that means the $8 minimum came out to less than 33 ¢ a map! 33 ¢ !!!!!
The only thing that isn't straight-up awesome about this fundraising map campaign is that the direct contributions haven't added up to the goal. As of this post we only made 60% of that goal.....Hopefully Matt's direct contribution from his monthly Patreon campaign puts it over the top, but I'd rather not leave it to chance.