I personally bought from the forum all of the grin received, at the market price when it was received: 80.128295191 grin for 0.0118213 BTC. Not my most successful trade...
You had previously claimed to have mined in 2010. If you still have any of the coin you mined from 2010, I can more or less guarantee that you will
never have a trade that is more successful than that trade.
There are estimates that it cost approximately $0.069 to mine a block in 2010, which is equal to approximately 0.138 cents per bitcoin.
To state the above in a different way, since 2010, the if someone were to acquire a bitcoin at a price of 0.14 cents, they would have increased their investment by approximately 457,000x.
For comparison, Peter Tiel, in 2004 purchased Facebook shares at a price that gave it a
$5 million valuation. Facebook is now worth approximately $948 billion, or ~189,000x what it was worth in 2004, however Tiels investment was likely diluted, probably at least by a factor of 2, if not more, so the actual return would be something along the line of an upper bound range of ~90,000x. For Tiel to have a better trade than theymos, the market cap of Facebook would need to go to ~$4.18 trillion while bitcoin stays flat.
IMO, the only coin that has even a 1% chance to exceed the market cap of bitcoin is etherum. The low price of etherum was around $0.66 in 2015. However due to differences in the available supply, this is equal to approximately $4.1. In other words, if someone had purchased etherum at its $0.66 low in 2015, in order to realize a 457,000x return, the price of etherum would need to reach a rate that would be similar to bitcoin being at ~$27.06 million per bitcoin.
In other words, someone that mined bitcoin in 2010 and has not yet sold is going to see investment returns that will not be seen again in their lifetimes.