Actually Joan, almost everybody DOES have stones, it's just that most don't know it until they start having gb attacks. I might have it backwards, but I think Dr Clark said that 90% have em and 80% of those don't know (or visa versa).
The prices for your cleanse herbs will vary according store and geographical location, but you should be able to pick your tincture, Wormwood and clove caps for $20 - $30. I got mine at Natural Living Center.