The only High Wall repro that is down near the Ruger #1 in price is a used Taylor & Co. version. All the others will be the same thing as the 1874 deal, higher, and nobody to trade with.
Not sure if you will find a used Taylor High Wall and someone willing to trade, but it's more possible. Not sure if you do find someone that it will be a better gun than your Ruger #1? But if you're dead set on buying a BPCR, why not sell the Ruger #1 and start saving, or reverse. Start saving, and sell the #1 when you get some cash saved?