I guess my two main concerns are . . .
Minimum split, 20mL. There are many bottles that are only 50 mL, and less than $2.50/mL. How would this work?
Allowing multiple people to split the same fragrance in the same geographical area. Unless it is a very popular fragrance, it may cause multiple to splits remain open longer than necessary.
On a side note, I had asked deadidol if there was any way the character count be increased, as I have run into this wall several times.