Note that the performant MSUCOF-3-TMCl (consisting of linker 4) is more inexpensive than MSUCOF-1-TMCl2 (consisting of linkers 1 and 2) and potentially MSUCOF-2-TMCl 2 (consisting of linkers 1 and 3). Additionally, in comparison to the cost of the linkers alone, the first-row chelation metal chlorides are two to three orders of magnitude cheaper. Importantly, even the abundant Mn, Cu, Ni, and Co often outperform Pd and Pt in terms of the working capacities of the MSUCOF families, yet are also shown to be orders of magnitude cheaper.