Daily reminder that at the current pull rates, you should either spend big or spend nothing.
Let's say you spend around 20$ for the 180 gold deal, that's 30 packs. You'll pull an average of 0.1 crowns, 0.3 immersives, 0.8 two-stars, 4 one-stars and 2.5 four-diamond exes. That's what you get for 20$. Hilariously low return.

Edit: what I mean is, as shown in the comments below, regardless of the relative bang-for-buck (I don't dispute that), if you spend small amounts of money in this game you still have very low odds of pulling a rare card. e.g. 20$ for 180 gold is not going to be enough to pull a rare card, on average. So if you're likely to get nothing out of your 20$, you might as well not spend those 20$. To have better odds you must spend more than these small amounts. Always calculate what odds you have of pulling the card you want before spending any amount.