Today I purchased a new 25 kg bag of KOH.

On 12/06/2007 it cost $63.20
Today 29/07/2007 the price has jumped to a massive $111.95

Just a few weeks ago a friend bought a bag and said the price was then around $73.

The KOH is ex China. The price hike is said to be caused by factory closures for the Olympics to cut smog, and so causing shortages and price hikes.

So either stock up now if your supplier hasn't been hit by the rise or hold off until after the Olympics have finished and everything returns to normal.

Will the price actually come back down again? Probably not.