My buddy is selling it at $12 a gram for 5x and its $40 for 5 grams. On his site he sells 5x, 10x and 15x extracts of Salvia as well as Salvia leaf and other herbs. It's the cheapest I've seen on the net and he's giving away 10 grams of leaf with every purchase of extract 4g and under and 30 grams for above that. Check out his site at http://www.salviadistrict.info and enter SP041016PC to get a $2.00 on extracts.

As for dose, it depends on the strength of the extract. But usually for 5x extract it's just 1/4g for a strong dose. As you get higher extracts the dose goes down considerably for strong effects.