Materials
2 meters of stretch fabric @ $8.oo/meter
2 meters of Chiffon @ $8.00/meter
OR
8-10 meters of Chiffon for Circle Skirt @ 8.00/meter
Veil material (2.5m chiffon)@$8.00/meter
Bra base $6.00-$15.00
Zipper $2.50
Beading Thread $8.00
Colored Thread $4.00
Elastic $4.00
Fasteners $3.00
Interfacing $6.00 
Average cost of materials for Chiffon skirt base  $100.00 and up
Average cost of materials for Velvet base $ 85.00 and up
Decorative Items
Beads $14.00-&16.00 per 1/2kg
I Typically use 2-3 colors of beads per costume and 2 different sizes of seed beads along with bugle beads.  (anywhere from 4-9  1/2kg bags of beads can be used  per costume)
Cost of beads can range from $60.00-$130
Stones
Swarovski stones range from 1.00/3.50  per stone 
Average stones used 50-100
Cost of Stones can range from $100.00 and up
Sequins
$6.00 per package (2-3 different kinds per costume)
Cost estimate for Sequing from $12.00-18.00
Average cost for materials for  a custom costume $ 250.00 and up
The average time it takes to create a custom costume is
6 weeks or 150 hours