I think to have the oils skin safe would make some scents more expensive, but not always. I have had some scent formulated for me and even when I told them, step it up, change this, change that, add this, make it stronger, My gross cost per LB was still under $10.00 and most started around $6.50. At $6.50 though, you wont get many that would fit into the great category. Typically good though. I am still learning though.