For a nice EF, it has to be:
either DEX or STR
socket
1200+ DPS
Crit power / life steal / max life on hit (tho not too many people use that anymore)
Just check the initial post. Mine was that expensive, because it has 70 dps less than what would be the absolute max for this item(and 1% crit less ofc).
The current condition of the game's economy very much reminds me of D2 after a few years passed and the ladder was being restarted. Only the very max items and last runes used to be worth something, although generally speaking, these items aren't as much better than the "not so max" items, as they are more expensive. The difference is rather in the rarity of these items; think of any rare real life thing- say old coins. Two almost identical gold coins could be worth different amounts of cash. Say $1000 for the one and $10 000 for the other, just because the second is more rare. Even tho these are both made of gold and only worth something as a collector's item, the rarity of the second coin drives the value up.