Really with that amount of money, (depending on how much you want to spend ), You could probably manage affording purples or just about anything else into your build.
How people IO their Fire/kins
1. Cheap but still effective
My opinion: Good if you don't want to spend too much, obvious setback if you really want your fire/kin to shine
2. The very expensive route: Miracles, NUmina's, Luck of the gamblers, just things that are typically expensive and alot of it, and Like I said, purples: disorient, hold, pet, etc Just about every purple set in existence can be slotted in a fire/kin,
My opinion: Mostly to max out things like recharge and and recovery , regen, and some other very nice bonuses. Is it worth all the money? It really depends on how much use you're getting out of your fire/kin and how you expect him to fight mobs
3. The Survivalist: Since the dawn of AE people have been thinking up better ways to build fire/kins for farming. The survivalist really focuses on soft-capping your s/l defense so mobs can't really hit you. The drawback? it takes away from having more global recharge and maybe some other things you'd might like. Most people take stone epic mastery, while fissure might not be the best Targeted AoE as far as being a killing machine
4 Others: Really you can combine and mix around builds all you like and find whatever works for you. Plenty of combos exist Here's one I work with
Level 50 Magic Controller
Primary Power Set: Fire Control
Secondary Power Set: Kinetics
Power Pool: Leaping
Power Pool: Speed
Power Pool: Fitness
Power Pool: Fighting
Ancillary Pool: Fire Mastery
Hero Profile:
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Level 1: Char
(A) Thunderstrike - Accuracy/Damage
(3) Thunderstrike - Accuracy/Damage/Endurance
(3) Thunderstrike - Accuracy/Damage/Recharge
(5) Thunderstrike - Damage/Endurance/Recharge
Level 1: Transfusion
(A) Miracle - Heal/Endurance
(5) Miracle - Heal/Recharge
(7) Miracle - Heal/Endurance/Recharge
(7) Miracle - Heal
(9) Accuracy
(9) Accuracy
Level 2: Fire Cages
(A) Positron's Blast - Accuracy/Damage
(11) Positron's Blast - Damage/Endurance
(11) Positron's Blast - Damage/Recharge
(13) Positron's Blast - Damage/Range
(13) Positron's Blast - Accuracy/Damage/Endurance
(15) Endurance Reduction
Level 4: Ring of Fire
(A) Thunderstrike - Accuracy/Damage
(15) Thunderstrike - Accuracy/Damage/Endurance
(17) Thunderstrike - Accuracy/Damage/Recharge
(17) Thunderstrike - Damage/Endurance/Recharge
Level 6: Combat Jumping
(A) Luck of the Gambler - Recharge Speed
(27) Kismet - Accuracy +6%
Level 8: Hot Feet
(A) Endurance Reduction
(21) Endurance Reduction
(21) Endurance Reduction
Level 10: Hasten
(A) Recharge Reduction
(19) Recharge Reduction
(19) Recharge Reduction
Level 12: Flashfire
(A) Stupefy - Accuracy/Recharge
(29) Stupefy - Endurance/Stun
(29) Stupefy - Accuracy/Endurance
(31) Stupefy - Accuracy/Stun/Recharge
(31) Stupefy - Stun/Range
(31) Recharge Reduction
Level 14: Super Jump
(A) Jumping
Level 16: Hurdle
(A) Jumping
Level 18: Health
(A) Numina's Convalescence - +Regeneration/+Recovery
(34) Miracle - +Recovery
(36) Miracle - Heal/Endurance
(36) Miracle - Heal
Level 20: Stamina
(A) Endurance Modification
(36) Endurance Modification
(37) Endurance Modification
Level 22: Siphon Speed
(A) Tempered Readiness - Accuracy/Slow
(23) Tempered Readiness - Endurance/Recharge/Slow
(23) Tempered Readiness - Accuracy/Damage/Slow
(25) Tempered Readiness - Accuracy/Endurance
(25) Tempered Readiness - Range/Slow
(27) Recharge Reduction
Level 24: Speed Boost
(A) Endurance Modification
(46) Endurance Modification
Level 26: Cinders
(A) Ghost Widow's Embrace - Accuracy/Recharge
(33) Ghost Widow's Embrace - Endurance/Hold
(33) Ghost Widow's Embrace - Accuracy/Hold/Recharge
(33) Ghost Widow's Embrace - Accuracy/Endurance
(34) Recharge Reduction
(34) Recharge Reduction
Level 28: Acrobatics
(A) Endurance Reduction
(37) Endurance Reduction
Level 30: Kick
(A) Empty
Level 32: Fire Imps
(A) Commanding Presence - Accuracy/Damage
(37) Commanding Presence - Damage/Endurance
(39) Commanding Presence - Accuracy/Endurance
(39) Commanding Presence - Accuracy/Damage/Endurance
Level 35: Tough
(A) Titanium Coating - Resistance/Endurance
(46) Titanium Coating - Resistance/Recharge
(46) Titanium Coating - Resistance/Endurance/Recharge
Level 38: Transference
(A) Accuracy
(39) Accuracy
(40) Endurance Modification
(40) Endurance Modification
(40) Recharge Reduction
(42) Recharge Reduction
Level 41: Fulcrum Shift
(A) Accuracy
(42) Accuracy
(42) Endurance Reduction
(43) Recharge Reduction
(43) Recharge Reduction
(43) Recharge Reduction
Level 44: Fire Blast
(A) Thunderstrike - Accuracy/Damage
(45) Thunderstrike - Accuracy/Damage/Endurance
(45) Thunderstrike - Accuracy/Damage/Recharge
(45) Thunderstrike - Damage/Endurance/Recharge
Level 47: Fire Ball
(A) Positron's Blast - Accuracy/Damage
(48) Positron's Blast - Damage/Endurance
(48) Positron's Blast - Damage/Recharge
(48) Positron's Blast - Damage/Range
(50) Positron's Blast - Accuracy/Damage/Endurance
Level 49: Fire Shield
(A) Titanium Coating - Resistance/Endurance
(50) Titanium Coating - Resistance/Recharge
(50) Titanium Coating - Resistance/Endurance/Recharge
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Level 1: Brawl
(A) Empty
Level 1: Sprint
(A) Empty
Level 2: Rest
(A) Empty
Level 1: Containment
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Set Bonus Totals:
+7,5% Defense(Energy)
+4,5% Max Endurance
+39% Enhancement(Accuracy)
+5% Enhancement(Heal)
+30% Enhancement(RechargeTime)
+1,5% Enhancement(Slow)
+3% Enhancement(Stun)
+140,1 (11,6%) HitPoints
+MezResist(Sleep) (Mag 4,4%)
+21,5% Recovery
+3,15% Resistance(Fire)
+3,15% Resistance(Cold)
+5% RunSpeed