Honestly can't say...
but can say this.
I have 108 socketed items in this bank, out of all the socketed items, there's a total of 9 items that have tertiary stats (leech, speed, avoidance, indestructible) and i think i've sold 2, so that's 11/110 items that have tertiary... i checked the other bank and it was around 15% of the socketed items that had tertiary stats, so it averages out at 12.5% chance for a socketed item to have tertiary.
Socketed cloaks with either full mastery or full vers get sold for around 200-300k i assume.
Now, theorically- to get speed, the 12.5% tertiary drop chance have to be divided by 4... 3.125% chance for a cloak to have speed, so RNG-wise, speed only drops every 32 adapted cloak.
TLDR;
Based on RNG alone i should be asking for 6.4 million gold.
I'm not gonna ask for that much, i hope i can get it sold for around a million gold or lower price over time