Some of you might be interested in this test
It costs £20, and tests:
Processing Speed:
Working Memory:
Auditory Memory:
Visual Memory:
Long-Term Memory:
Visual Processing:
Auditory Processing:
Logic & Reasoning:
Word Attack:
And gives you an age equivalent and percentile score for each section.
The results tally with other EP reports I have had done, so it seems pretty accurate to me.