Help Pricing ring

All Ele resist 27 fire, 27 cold, 41 Lightning
10 Chaos Resist
Decent roll phys dam
Decent rolled ele dam

Nothing in prophecy that looks like this. Closest in standard is at 2 Ex but none have chaos as well...

I have mine at 2.5 Ex, but worried that is too low

On standard there is one item that has 25+ all ele, chaos resist, phys dam to attacks, increased ele dam - it is mirrored at 199 Ex. It also has an awesome accuracy rating which mine doesnt, and the chaos is high and not implicit, ... Not saying mine is near worth as much. But 2.5 I think is low. But there is very little out there to compare this to

http://poe.trade/search/akatameremaman