well it really depends what your buying, for example a gram of x5 is only 11$ and i order from a site in the netherlands so you could probly find salvia in headshops or random conviences stores for cheap. its jsut that i could never find any x20 extract around here.
i dont find it addictive at all though. the last time i had any was 3 weeks ago, probly could be harmful to take it habitually since there hasnt been much research done on the herb.
May the wind always be at your back
and the sun upon your face,
and the winds of destiny carry you aloft
to dance with the stars...