The price on golix.com (the Zimbabwe exchange) is so high because you can't cash out except into a Zimbabwean bank account. All other cryptos traded there also have a similar mark-up which is due to the black market costs of scarce $$$ in Zimbabwe, so you can't arbitrage either.

BCH and BTG aren't BTC so your addition doesn't work, at all. Why not add DASH there as well, it's also a bitcoin fork.