You are sure ?
Let's calculate ...
At the moment you pay for a riftwatcher pack arround 3.6$ at the market ...
If they will be sold for 5.000 DEC it would be arround 3.9$.
So for 2400 pack you pay 2.000 x 3.9$ = 7.800$ + 2.400 Voucher for 0.05$ each = 120$.
So you would pay 7920$ for 240 packs = 3.3$ / pack. That mean you can buy a pack WITH Airdrop-chance approximately 10% under the second market price WITHOUT Airdrop-Chance, you don't think that their can be a run ?