The bottle is expensive looking, glass with a gold screw cap. The only gripe I have is that there is no pump, so sometimes it leaves the bottle a little messy and too much product flows out. However if you can live with this and are prepared to spend £31.00 you will be thrilled with the results. I do believe you are now able to purchase a pump from Estee Lauder for around £5.
This is now a Holy Grail product in my collection, I cannot live without this as part of my makeup routine and love it.
As for comments about the formulation changing, I have only recently bought a new bottle of this and it seems exactly the same to me.
Try it, you will love it!