Everything that is beyond the buyingprice is additional and can be calculated in whatever you like. But an investment in BTC has to come back in BTC.
This x1000. When investing in btc, measure your returns in btc.
And if you're "a believer" then the more transactions you do in bitcoin (such as buying a batch 3 Avalon), the better it is for Bitcoin. And if you're a believer in Bitcoin, then you're in for the long haul anyway.
And if you're only here for a quick buck, then I hope you put in your life savings at $200 and sold in a panic at $100.