Spell Points, and How To Get More

I’m using the spell point system in my next campaign, and was wondering what the hivemind thinks a mana/spell point potion should cost. I’m not completely up on psionics, is there a similar thing that could be modeled after?

If there isn’t, here’s what I’m thinking:

Elixir of Power (SP)

Market Price: SP2 × 50 gp.

School Evocation; Strength varies based on the SP in the Elixir

Prereq: Brew Potion, Craft Wondrous Item, Caster Level must be at least equal to the SP infused in the potion (Use standard gp/xp cost to create formulas)

Effect: Standard Action that provokes an attack of opportunity, Restores (SP) Spell Points to your power pool. If this takes you over your maximum, the excess is gained as temporary SP that lasts for 10 minutes.

New Rule/Effect, Mana Burn: Each round, at the beginning of your turn, if you have temporary SP, you take an amount of damage equal to your temporary SP.

What do you think?

Yes, a 1st level that somehow got their hands on an Elixir of Power (20) would probably kill themselves, as it is far too much power for them to handle.