Oh, was it 100$? I couldn't recall exactly. The quests for legendary weapons didn't bother me terribly much. My initial legendaries hadn't worn out by the time I finished the quests to get the schematics up to legendary level.
Major update Survive the Storm dropped earlier this week. Even if you aren't actively playing right now you should still log in to get the "Month One" rewards which will disappear when the special event ends. Rewards are 25 armory (inventory) slots, 10 backpack slots, 1 people llama and 1 weapon llama.