Item Set Discounts in the Store

I see in the section where you can buy gear from the warmane site where it has a "item sets" that it breaks down by class. However on TBC realm, there are no listings there even though tier 4 and some glad sets are up on the site.
Would there be a possibility of having an item set discount of sorts. For example, if there are 5 pieces of t4 selling at 25 coins per piece, youd total to 125. Maybe with a set discount you could be looking at 110 or maybe even 100 coins?
As an exalted donator rank, I personally would be more inclined to buy a full set of gear instead of each piece individually if it came with a slight discount. The option to do so appears to be implented in the store, just no gear across the TBC/WOTLK servers. (I dont play on the others so Im not totally aware if they have full sets purchasable there.)