I had a nearly 15ml sample of this, which lasted me weeks and weeks. I feel you probably would get value for money from buying the expensive full-size tube.
I appreciate the SPF 20 and I felt that I could use a lot of the product to get good sun protection without it getting cakey or too built-up.
It is very moisturising and didn't cling to any dry patches of skin. It was very easy to apply.
I had the shade Nude, which was probably a little too orange for me but it blends very easily and this wasn't a problem at all.
It claims to give a smooth, healthy glow, which I would agree with. For my liking the coverage is too sheer and lightweight. There are other BB creams which provide a little more coverage.