Out of curiosity, why did you choose 50 for copper/silver exchange rate? Just to better portray what they're worth in our world? This should be way simplified using 10 or 100. Preferably, the same exchange of the silver/gold ratio so that we could make conversions without so much math involved. I mean, if the ratios are always powers of 10, then it would only be a matter of moving the comma around depending on the unit of measure.
Because I wanted to devalue gold a bit.
Here are the ratios I was working with.
Copper-Silver-Gold
100-10-1250-25-2.52,500-250-2525,000-2,500-250250,000-25,000-2,5002,500,000-250,000-25,000
500-10-12,500-50-525,000-500-50250,000-5000-5002,500,000-50,000-5,000
1,000-10-12,500-25-2.525,000-250-25250,000-2500-2502,500,000-25,000-2500
I guess we could use the 100-10-1 system. At first I looked at a 1000-100-1 system and got it mixed up with the 100-10-1 system. That's why all my math was off and why I changed it to a 500-10-1 system.