Hmmm...good question.
Let's see:
Helmet (total w/upgrades): about $110
Jumpsuit: $20
Vest: $8 (cheapo turtleneck with sleeves cut off)
Armor: All Sintra, formed by me...with the paint...$40
Ammo Belt: Scratch built...about $10.
Blaster: Scratch built...$15 or so.
Boots: STILL HAVEN'T GOT HERE!! But..$62.
Gauntlets: Paid for but MB is still making them...$53.
Scalps: $10.
LEDs: $10 or so.
All told...that's about $340.