Price check on 30 minute void armor method. (rs3 only)

I know how to get void armor (the chest, bottom, gloves and all helms) in less than 30 minutes by playing conquest with yourself.

Just wanted to get an idea on how much a method like this would go for considering void armor isn't as sought after as it used to be.

I've never heard anyone else describe my method but I am unaware if anyone else is using it.

Does not work on OSRS.

Thanks.