Yes, there would have to be some negotiation/matching on price. I'd see it as an iterative process, whereby a set of backers post a problem, with or without a

Yes, there would have to be some negotiation/matching on price. I'd see it as an iterative process, whereby a set of backers post a problem, with or without a cost estimate. The solver puts forward a proposal with estimated costs and each backer chooses whether they want to accept that proposal. The process then iterates until a tipping point is reached in the funding. Good idea to see it as an addendum to an existing service rather than a service in its own right. Or an amalgam might work, whereby the "kickstarter for problems" is a separate service, but on reaching the tipping point the project morphs into a regular kickstarter project, that has already reach its tipping point. This would require each backer to also have a kickstarter account (if not the kickstarter project would come up below its tipping point), but it would save a minimum viable product from the complexities of having to handle money.