Figure demonstrates that the upcycling infrastructure is robust to diverse scenarios. For instance, we can see that the the system remains viable even if residents offer their waste at high values (residents would like to get paid for providing the waste feedstock). Specifically, we find that total waste captured remains high (>99%) for offering costs of up to 40 USD / tonne (but economic surplus decreases). Waste capture drops off sharply for higher offering costs. Figure also shows the performance of the upcycling infrastructure with adjustments to the efficiencies of critical technologies (including conversion of plastic flake to pyrolysis oil at pyrolysis facilities, and the conversion of pyrolysis oil to ethylene and propylene monomers at steam cracking facilities). When technology efficiency is increased, the economic surplus significantly increases (as these conversions are key precursor steps to the formation of valuable end products). However, we also note that, as efficiencies increase, the total waste captured decreases slightly in some cases; this is because, as efficiency increases, more product is formed and the constrained upcycling infrastructure reaches capacity faster (upcycling is able to involve fewer residential providers while producing better overall economics).