The repros are almost as expensive as originals. There are several competing factors involved. The biggest is quality. These two demands are in direct opposition to each other. Most companies will not accept an order for 50-100 caps.
Same theory applies to uniforms, badges, etc.
In many instances, originals will be less expensive than the reproductions. If you wear a size 40 or smaller this typically doesn't matter as originals in your size-range are still available. However, if you wear a size 42 or larger, originals are nearly impossible to find. Please bear in mind that the boots will very likely NOT be produced because of cost factors. I doubt there is a market for 100 pairs of boots, let alone the 200-pairs that need to be ordered as a minimum.