Yes, if you are saying $20 = 1 gp. See, the original editor for that volume exchanged Gary's $ system as $20 = 1 gp, $2 = 1 sp, $0.20 = 1 cp. That translates to the 3e method of 1 gp = 10 sp = 100 cp. Gary does not prefer this exchange (and FWIW, neither do I). So, as the 24 town modules are...