Note that Half-Saiyans recieve the transformations of either Saiyans or Humans, it's up to them. Regardless of which they pick they do get Oozaru however.

Saiyan

Oozaru: PL and STRx2. It may only be used once a month without a Moon Ball. Unless the user has the ability "Oozaru Control" they cannot use ki attacks in this form, save the "eraser Cannon".
Requires: 0 PL

Giji: PL and Statsx1.5.
Requires: 10,000 PL

Super Saiyan: PL and Statsx2
Requires: 30,000 PL

Super Saiyan (Power Weighted): PL and Kix2. Strengthx3. Speed/2
Requires: 35,000 PL

Super Saiyan 2: PL and Statsx3
Requires 100,000 PL

Super Saiyan 3: PL and Statsx4
Requires 300,000 PL

Golden Oozaru: PL and STRx5. Oozaru rules apply.
Requires: 500,000

Super Saiyan 4: PL and Statsx5
Requires: 750,000

Human

High Tension: PL and Statsx1.5
Requires: 5,000 PL

Latent Rage: PL and Statsx2
Requires: 20,000 PL

Third Eye Awakening: PL and Statsx2 (perminant)
Requires: 100,000 PL

Namek

Fusion: PL and Statsx1.5 (perminant)
Requires: 40,000 PL

Split: PL and Stats/2 (perminant)
Requires: Whenever you want, after Fusion, only once.

Merge: PL and Statsx2 (perminant)
Requires: Whenever you want, only once. Must have Split in the past.

Changeling

Form 2: PL and Statsx2 (perminant)
Requires: 30,000

Form 3: PL and Statsx2 (perminant)
Requires: 120,000

Form 4: PL and Statsx2 (perminant)
Requires: 500,000

100% Power: PL and Statsx2
Requires: 1,300,000

Android

None (They may however purchese and install modification parts)

Bio Android

Larva: This transformation permenantly reduces the users Powerlevel back to their starting amount. However their powerlevel at the time of use is divided by 100 to become their new "cellular memory". This is of course entirally optional and may be used at any time.
Requires: 0 PL

Imperfect: PL, Ki, and Strx3. Speed/2 (Perminant)
Requires: 30,000. 1 android absorbed.

Perfect: PL, Ki, and Strx2. Speedx4 (Perminant)
Requires: 250,000. 2 androids absorbed.

Perfect Form (Power Weighted): PL, Ki, and Strx2. Speed/2.
Requires: 600,000. Perfect Form.

"Super Perfect" Form: PL, Ki, and Strx2
Requires: 1,200,000. Perfect Form