She's photographed quite a lot, some pictures aren't worthy and/or have no use for postings on sites.

If there's a thread on here, I'll start posting them more often, I get several emails each day with new photos

Angelina is most definitely more photographed than GaGa, but Britney? Debatable.

I remember Britney's pictures of her shaving her head, were worth $150k, or something like that. Angelina has never had a picture worth $50k taken by the paparazzi, which in common sense means Britney, at the time, had more demand of pictures and was photographed more. If this doesn't cut it for you, I don't know what will.

Wait until Angelina does something as thoroughly and shamelessly attention-seeking as shaving her head, and see what that fetches.