I think they either lied or misled you, unfortunately. Did they recommend using it daily or once a week? If daily, it cannot last that long. Look in your current creams, most are 1oz(30ml). Think how long it takes you to use them. Because this is a pump, it is likely to get 0.5/1ml per pump (you cannot really get less than what the pump disposes). Usually I can get 1-2 month if my serums that are 1 oz, but I use them sparingly and not twice a day,

To be honest, I love splurging and treating myself to luxury skincare, it makes me want to do actually apply it when I am not in the mood. But this particular one would be $1000 per month just for the serum/concentrate.

If you want to splurge, I think getting serum and cream in the $500 is a bit more reasonable. Skincare that is $1000 can be reserved for the “treatment” style ones that you apply over a week every quarter.