Hi, maybe you will be surprised, but material isn't actually expensive, if you know where to buy it. Rough estimate can be:

2-3mm cowhide ca. 2and1/2 pieces of "sidestripe" about 500CZK (25$) - helmet, plaudrons, bracers, belts, scabbard

ca. 5x500ml bottle of a stain (3 coulours) 275CZK (14$)

soft cloting leather (remaining peaces) - price is counted per kilograms - I can't remember exactly but not more then 300CZK (15$) - corset, trousers, stripes for hems

linen thread for stitching cca 135CZK (7$) (most of spool is left)

woollen military blanket 150CZK (8$) - top and skirt

cotton cloth ca. 2,5m about 250CZK (12,5$) now - double-sleeve shirt

woollen cloth for sash about 180CZK (9$)

buckles about 90CZK (4,5$)

golden thread about 20CZK (1$)

other material (petroleum, beeswax, vaseline) about 80CZK (4$) for used amount

In total it is about 1710CZK (85,5$) ... even if I'd forgot something to count, it wouldn't be more then 2000CZK (100$) ... except of highboots (discarded from my casuals) and gloves (given by employer)

I'm sorry for the length of my comment, but I think it could be quite intresting that costume like that may not be really expensive.