I don't think anyone has posted a similar topic, sorry if I missed it in search.
So, you've decided to buy the online dominion cards. You spent ~$45 to get 540 gokoins, and are eyeing the megapack, which is very conveniently priced at - wait for it - 540. But, as some posters have alluded to, it's a trap! (insert amusing star wars meme here)
Some set-covering math has revealed the best way to buy your cards:
- Intrigue at 70
- Seaside at 70
- Prosperity at 70
- Super Pack 2 at 140, covers the next 3 expansions
- Dark Ages at 110
Total cost, 460. So, you should not buy Super Pack 1 as far as I can tell, and it just flat out lies to you about saving 15%. You SHOULD buy Super Pack 2, but it doesn't save you 10%. And then get Dark Ages.
If you buy the Megapack, you get coins and zaps. Yay. 10 zaps and 735 coins. 10 zaps cost 700 coins (not gokoins), so you are getting 1435 coins. That's 'worth' about $10. For which you pay 80 gokoins. You can pay $7 to just buy 70 gokoins. And anyway, who's buying coins? It's not like the adventures are fun after you play the same thing 30 times in a row. At least the campaign mode of the slightlymagic.net implementation was interesting.
Summary: Goko takes your money and lies to you about how best to spend it. The honest best way to spend it is to buy some expansions individually, and one superpack. Because that's not confusing at all.