Psion powers with exp cost
4th level (1 out of 17)
5th level (1 out of 12)
6th level (1 out of 12)
7th level (1 out of 12)
8th level (2 out of 8)
9th level (2 out of 7)
Total: 8 out of 161
Discipline Specific Powers with exp costs:
5 out of 6 disciplines have disciplines specific powers with exp costs with the telepath having the most.
Egoist:
5th level – 1
8th level – 1
9th level - 1
Shaper:
9th level – 2
Seer:
4th level – 1
9th level - 1
Telepath:
6th level – 1
8th level – 1
9th level – 2
Nomad:
9th level - 1
Psychic Reformation
Level: Psion/wilder 4
Power Points: 7, XP; see text
XP Cost: This power costs 50 XP to manifest to reformat choices made when the character reached her current level. For each additional previous level into which the revision reaches, the power costs an additional 50 XP. The manifester and subject split all XP costs evenly.
Incarnate
Level: Psion/wilder 5
Power Points: 9, XP (500 to 2,000)
Contingency, Psionic
Level: Psion/wilder 6
Power Points: 11, XP (15)
Sequester, Psionic
Level: Psion/wilder 7
Power Points: 13, XP
XP Cost: 75 XP
Bend Reality
Level: Psion/wilder 8
Power Points: 15, XP (300+)
Matter Manipulation
Level: Psion/wilder 8
Power Points: 15, XP (250/hardness point)
Apopsi
Level: Psion/wilder 9
Power Points: 17, XP (50/level of power deleted)
Reality Revision
Level: Psion/wilder 9
Power Points: 17, XP (5,000+)
Discipline specific powers:
Psionic Revivify
Level: Egoist 5
Power Points: 9, XP (200+)
Fusion
Level: Egoist 8
Power Points: 15, XP (50)
Metamorphosis, Greater
Level: Egoist 9
Power Points: 17, XP (200)
Genesis
Level: Shaper 9
Power Points: 17, XP (1,000)
True Creation
Level: Shaper 9
Power Points: 17, XP (1/5 gp value, 1+)
Remote Viewing
Level: Seer 4
Power Points: 7, XP (20)
Metafaculty
Level: Seer 9
Power Points: 17, XP (1,000)
Mind Switch
Level: Telepath 6
Power Points: 11, XP (100)
Mind Seed
Level: Telepath 8
Power Points: 15, XP (3,000)
Mind Switch, True
Level: Telepath 9
Power Points: 17, XP (10,000)
Psychic Chirurgery
Level: Telepath 9
Power Points: 17, XP (1000 x level of power implanted)
Time Regression
Level: Nomad 9
Power Points: 17, XP (1,000)
Sorcerer spells with exp cost
5th level (1 out of 43)
7th level (3 out of 35)
9th level (2 out of 24)
Total 6 out of 370
Permanency
Level: Sor/Wiz 5
Components: V, S, XP (500 – 4,500)
Limited Wish
Level: Sor/Wiz 7
Components: V, S, XP (300 +)
Simulacrum
Level: Sor/Wiz 7
Components: V, S, M, XP (100/HD of simulacrum, minimum 1,000)
Vision
Level: Sor/Wiz 7
Components: V, S, M, XP (100)
Gate
Level: Clr 9, Sor/Wiz 9
Components: V, S, XP(1,000 when calling a creature only)
Wish
Level: Sor/Wiz 9
Components: V, XP (5,000)
So psions have 8 (not counting discipline specific powers with exp costs). Depending on the discipline the psion can end up with from 8 to 12.
Sorcerers have 6.
Pretty close unless you count them as a percentage of powers/spells then it goes something like this.
Sorcerers have 6 out 370 spells with exp costs. {1.6 % of total spells}
Psions have between 8 and 12 out of somewhere around 177 (I used an average of 16 powers per discipline) {4.5 to 6.8 %}. More than double the percentage.