You can buy 13,000 gold for $100 in this game. With that gold you have a few options, you can buy multiple recipes (obtainable in-game), you can buy 7,800 tickets (winnable through PvP and also given out for free), you can buy 650,000 silver (easily obtainable in-game, however this is a large amount and great for lever boosting, one can boost a total of 650 levels with that amount of silver), the last thing you can buy with gold is gold eggs and gold mission eggs.
I’ve spent 13,000 gold on gold eggs and spun them all at random, no timing involved, not even in the slightest. Any gold won was spent as well. Here are my rewards: (The grade is in parentheses next to the monster, © is C grade and if there are multiple letter that means there were multiple of that ark.)
Snowstag (A) (B)
Nightfoal (A) (A) (B)
Orcow (S) (S)
Nightmare © (B)
Raioh (S) (A)
I also had 120 gold leftover. For new players this could have really helped, I got many monsters that are hard to obtain and powerful early on. For experienced players with many level 99s, this is helpful as well because it added many arks at level 99 to the team. For players just completing the story, or are in the middle of it, this is great as well because they have a wide variety of arks at their disposal and can now be a much better player.
Notice that I got 2 egg exclusive monsters, Bloodclaw and Goldenhorn. I also got Brakie and Leafy, which could have saved me twenty terribly boring hours of grinding. I got monsters like Plasmorex, Twiggy, Raijin, Toucan, Anubis, Gryphon, Nightfoal/Nightmare, Orcow and Scallotooth who are all hard to come by and can be quite time consuming to obtain. In addition, many monsters in here are quite powerful, even if they aren’t as rare, for example, Dullakhan, Pengboss and Stormfox are all great monsters to use. Also, looking at the grades of each, I got nothing below C, and a lot of A’s and S’s.
I think the money was worth it, not only did I get a lot of powerful arcadions, saved myself many many hours of grinding and got myself egg exclusive arks, but I supported a great game and a great company that really cares about it’s players. Sometimes they even give discounts on eggs, for example I heard about a discount around Thanksgiving, but I wasn’t playing at that time, and they have 5 eggs we can buy for 150 gold each in the bazaar!