I sold almost the exact same stats, mine was 82/85/82 with 75 slayer. It sold about a week ago for 100M. Mine also didn't have a ban, so maybe a bit less for having a ban.
100 hours? I just did 1-75 slayer on my 70/70/70 in 9 days...? I dont know where you're getting 100 hours from. Plus the're max melee accounts with a possible cannon, so it shouldn't take too long.
How can you 100% prove that you hand trained it? You can't. Unless you record your screen every second that you've ever been on an account, there is no way to prove 100% that it's hand-done? If you have a viable way to prove this, then explain?