In day 6 of it... got all the free decks... 15 of them... I did Pay $5 for the starter pack (you get 5 packs of the Core Set and about 2400 GEMS)
Through playing daily and getting quest rewards I got 10,000 gold so far and maybe 10 packs (didn't keep up with count).
I used 5000 gold to do a draft event... won 4 games before I lost 3... so I got another pack out of that about 450 Gems.
I got one of those Damned rebate Mastercards from Discount Tire that is a pain to use unless the amount equals the $40 perfectly... that's what I put in for my credit card... too bad they charge tax, otherwise I could have used all up except for about 5 cents.
Now that I have all 15 prebuilts, all those extra packs I opened, along with 13 uncommon, 10 uncommon, 4 Rare and 2 Mythic Rare wild cards, I need to build something better.
Someone posted this mono-blue deck which I can make with all my wildcards.
https://www.mtggoldfish.com/archetype/standard-mono-blue-tempo#arenaLike DDO, I'm good with playing someone else's ideas, but I hate spending the time trying to build the deck. I can take something apart that someone else built and know how it works, but building something from scratch is not my forte.