Hi Moeez,
You must probably looking at the prices listed on the suppliers' websites.
Wholesale pricing usually works on volume buying. A wholesaler supplier won't be able to give you an accurate price until they actually know what sort of volume you want to purchase. Most wholesalers will have a set structure in place, pricing per unit type of thing, but not all do.
It's always best to talk with them for the prices, and let them know what your requirements are in regards to purchasing volume and they will happy to provide you with pricing based on those requirements, and also so long as the minimum order quantities set by the supplier are met. :)
Please find below some suppliers that you might want to work with:
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All the best!