I have use Benzac BP which I actually preferred the texture of. Dans seems kind of gritty but it is more cost effective (even with shipping to AUS from US) because it's in a bigger tube. It also seems to be working fine, without producing a gel like layer on top of my skin. Along with the AHA by dan these are the acne.org products I would probably re-purchase/recommend.
I live in Australia now (I used to live in the US but have been here for 3 years). The amount of product you get with Dan's Regimen is amazing. I could never find any product that contained 2.5% BP in America. The lowest concentration was 5% and the amount you got was literally like maybe 2 applications worth. It was preposterous.
I have not been able to find 2.5% BP in Sydney either.
I personally believe that if you're going to do the Regimen, don't screw around with the products. Dan's company used to be a non profit and he did not get into this to make money.
The Regimen is working for thousands of people, millions maybe, and Dan designed the products himself with the help of chemists. He spent decades perfecting the regimen so I trust his judgment and product recommendations. If you follow the instructions and use his products you just can't go wrong, unless you have some sort of allergy or something.
While you asked if "Dan's stuff is worth it"....
I'd ask the question, what price would you put on having clear skin?
@boxerchick are you in Sydney?