The problems you've got left...
are probably the difficult ones.
We'd all like to find discount answers to our problems. Organizations, governments and individuals prefer to find the solution that's guaranteed to work, takes little time and even less effort.
Of course, the problems that lend themselves to bargain solutions have already been solved.
What we're left with are the problems that will take ridiculous amounts of effort, untold resources and the bravery to attempt something that might not work.
Knowing this before you start will help you allocate the right resources... or choose not to start at all--this problem, the one that won't be solved in a hurry, might not be worth the effort it's going to take. If it is, then pay up.