Most price efficient way for 1-72 Herblore

I'm wanting to get 72 Herblore, and I need to know how much it would could doing the most price efficient thing.

Please help.

 

Honestly, don't even try herblore right now.
Everything's bought out atm, wait for it to get dumped and crash, then buy it maybe.

Just a hint

 

Your referring to no pots or supplies selling. That's because of everyone buying them out now due to the double xp weekend. There will be no selling/crash, everything everyone buys will be gone.

 

Clean grimy herbs. You'll make money, and it's still like 60-80k exp/hr. I did that up til 75 herb

 

what herb did you clean?

 

I promise you this is the most cost efficient way as of right now:
http://forums.zybez.net/topic/1421513-free-herblore-exp/

Grimy herbs won't sell for shit so.... enjoy