Winters Haunt event heirloom shards and Winters Bane mythic using pack discounts

I have been saving up my cm and coin from the bp for a while now, hoping to have enough when the anniversary event next comes around to buy shards, if offered.

So far I've managed to save up 7,200 coin and 24,900 cm.

After opening my first free event pack, got Legendary Hemlock, I looked at the event pack pricing and saw the discounted pricing for some of the event packs. So that left 29 packs to open. I bought the 29 packs 1 at a time. 

1st free pack opened

1 pack @ 100 coin = 100
4 @ 300 coin = 1,200
5 @ 500 coin = 2,500
3 @ 700 coin = 2,100

For a Total of 5,900 coin

Then I opened the 2nd free event pack.

I then bought 15 packs @ 1,650 cm each, costing 24,750 cm.

Got Winters Bane and 150 shards and still have 950 coin for the next bp.🥳

If you have cm and coin saved up, this is imo an opportunity not to be missed.