I use Hydroguard but costs just as much I believe. I just can't find Bushdoctor around my area.
How much do you get for $26? It might just be worth it if they give you a big bottle because 2 drops isn't very much, I have to add like 100ml of Hydroguard every res change so it adds up.
Apparently they do not make Bushdoctor Sledgehammer anymore. If anyone is interested in the stuff I would search the internet and buy some before the supply runs out.