Hi all,

Below is my first attempt to create a cheap set IO build to be used for non-PvP toons or as a second build:

Click this DataLink to open the build!

Darkest Blast: Level 50 Mutation Dominator
Primary Power Set: Mind Control
Secondary Power Set: Psionic Assault
Power Pool: Speed
Power Pool: Flight
Power Pool: Fitness
Power Pool: Concealment
Ancillary Pool: Leviathan Mastery

Villain Profile:
Level 1: Levitate -- Ruin-Acc/Dmg(A), Ruin-Dmg/EndRdx(3), Ruin-Dmg/Rchg(11), Dmg-I(43)
Level 1: Psionic Dart -- Volly-Acc/Dmg(A), Volly-Dmg/EndRdx(5), Mael'Fry-Acc/Dmg(15), Mael'Fry-Dmg/EndRdx(19)
Level 2: Dominate -- Ruin-Acc/Dmg(A), Ruin-Dmg/EndRdx(3), Ruin-Dmg/Rchg(7), Dmg-I(43)
Level 4: Mind Probe -- B'ngBlow-Acc/Dmg(A), B'ngBlow-Dmg/EndRdx(5), B'ngBlow-Dmg/Rchg(11), KntkC'bat-Acc/Dmg(19), KntkC'bat-Dmg/EndRdx(23), KntkC'bat-Dmg/Rchg(31)
Level 6: Confuse -- Mlais-Acc/Rchg(A), Mlais-EndRdx/Conf(7), Mlais-Acc/EndRdx(15), Mlais-Conf/Rng(31), Mlais-Acc/Conf/Rchg(33)
Level 8: Hasten -- RechRdx-I(A), RechRdx-I(9), RechRdx-I(9)
Level 10: Hover -- Flight-I(A), Flight-I(46)
Level 12: Telekinesis -- EndRdx-I(A), EndRdx-I(13), RechRdx-I(13), RechRdx-I(50)
Level 14: Fly -- Flight-I(A), Flight-I(43), Flight-I(46)
Level 16: Psychic Scream -- AirB'st-Acc/Dmg(A), AirB'st-Dmg/EndRdx(17), AirB'st-Dmg/Rchg(17), AirB'st-Dmg/Rng(36)
Level 18: Total Domination -- NrncSD-Acc/Rchg(A), NrncSD-EndRdx/Hold(36), NrncSD-Acc/EndRdx(36), NrncSD-Acc/Hold/Rchg(37)
Level 20: Drain Psyche -- Efficacy-EndMod(A), Efficacy-EndMod/Rchg(21), Efficacy-EndMod/Acc/Rchg(21), Efficacy-Acc/Rchg(23), Efficacy-EndMod/Acc(34), Efficacy-EndMod/EndRdx(40)
Level 22: Swift -- Flight-I(A)
Level 24: Health -- Heal-I(A), Heal-I(25), Heal-I(25)
Level 26: Terrify -- AirB'st-Acc/Dmg(A), AirB'st-Dmg/EndRdx(27), AirB'st-Dmg/Rchg(27), AirB'st-Dmg/Rng(37)
Level 28: Stamina -- Efficacy-EndMod(A), Efficacy-EndMod/Rchg(29), Efficacy-EndMod/Acc/Rchg(29), Efficacy-Acc/Rchg(31), Efficacy-EndMod/Acc(37), Efficacy-EndMod/EndRdx(40)
Level 30: Stealth -- EndRdx-I(A), EndRdx-I(46)
Level 32: Mass Confusion -- Mlais-Acc/Rchg(A), Mlais-EndRdx/Conf(33), Mlais-Acc/EndRdx(33), Mlais-Conf/Rng(34), Mlais-Acc/Conf/Rchg(34)
Level 35: Invisibility -- EndRdx-I(A)
Level 38: Psychic Shockwave -- C'ngBlow-Acc/Dmg(A), C'ngBlow-Dmg/EndRdx(39), C'ngBlow-Dmg/Rchg(39), C'ngBlow-Acc/Rchg(39), Dmg-I(40)
Level 41: Water Spout -- AirB'st-Acc/Dmg(A), AirB'st-Dmg/EndRdx(42), AirB'st-Dmg/Rchg(42), AirB'st-Dmg/Rng(42)
Level 44: Bile Spray -- AirB'st-Acc/Dmg(A), AirB'st-Dmg/EndRdx(45), AirB'st-Dmg/Rchg(45), AirB'st-Dmg/Rng(45)
Level 47: Hibernate -- Efficacy-EndMod(A), Efficacy-EndMod/Rchg(48), Efficacy-EndMod/Acc/Rchg(48), Efficacy-Acc/Rchg(48), Efficacy-EndMod/Acc(50), Efficacy-EndMod/EndRdx(50)
Level 49: Super Speed -- EndRdx-I(A)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- EndRdx-I(A)
Level 2: Rest -- RechRdx-I(A)
Level 1: Domination
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Set Bonus Totals:

• 13,5% DamageBuff(Smashing)
• 13,5% DamageBuff(Lethal)
• 13,5% DamageBuff(Fire)
• 13,5% DamageBuff(Cold)
• 13,5% DamageBuff(Energy)
• 13,5% DamageBuff(Negative)
• 13,5% DamageBuff(Toxic)
• 13,5% DamageBuff(Psionic)
• 1,25% Defense(Energy)
• 1,25% Defense(Negative)
• 0,63% Defense(Ranged)
• 5% Enhancement(Confused)
• 8% Enhancement(Knockup)
• 8% Enhancement(Knockback)
• 7% Enhancement(Accuracy)
• 27,5% Enhancement(RechargeTime)
• 125,9 HP (12,4%) HitPoints
• MezResist(Immobilize) 4,95%
• MezResist(Terrorized) 3,3%
• 11,5% (0,19 End/sec) Recovery
• 34% (1,44 HP/sec) Regeneration
• 2,52% Resistance(Smashing)
• 2,52% Resistance(Lethal)
• 3% RunSpeed

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The above build took me about 1 week to create and cost me exactly 65,894,580 inf. Out of 17 sets I have 5x lvl30s, 2x lvl40s, 8x lvl45s and 2x lvl50s. And all single aspect IOs are at lvl45.

A build with same powers but designed completely with single aspect enhancement could have cost me like below:

All with SOs: 5,214,576 inf
All with +2 SOs: 15,643,728 inf
All with lvl45 IOs: 15,400,900 inf
All with lvl50 IOs: 40,359,400 inf
All with lvl50 IOs, but crafted by someone with memorisation badges: 20,414,500 inf.

A cheap set IO build is still expensive than other alternatives, however, thinking about set bonuses gained at the end (especially HP, Recharge, Damage, Regeneration and Recovery) I think it's worth it.

I hope this little experiment would be useful to you.