Sorry, can't see Facebook, so can't see your images.
Edit your posts above to include them here in this forum, please, so later readers can refer to them historically.
The confusion comes from your terminology - there is no such thing as a Super Pack or a Mega Pack.
Packs improve in contents over time. No Super or Mega about them. Upon a purchase, they revert to least contents.
Their baseline price is the price you paid on your last purchase.
Price declines while contents remain the same, over time. Frequently half the price delivers half the contents, so the value is the same, but the 'Gift of Gold' remains the same. ('ish?) i.e. Half price, same gold = double the gold. So, if you buy more often, you can purchase the same pack again, sooner. If you wait for the best offers at the cheapest prices, you will wait the longest for their return. 10 - 12 weeks, has been my guess.
Offers seem mostly to be periodic - discerning the period isn't particularly easy sometimes. e.g. Every nth day, day of week, or a rotation. Assume at least a 2 week rollover period, to follow the KvK/r cycle. e.g. Eagle's Nest and Black Castle pack offers occur before different events.
If you see Gold of the Elite or Time to Flourish: Gold for 50%! at or near 3M gold (for $6.99, not the $12.99 4.8M offer), you have arrived at the highest improvement you are going to see.
Watch that you purchase then, soon, or they will soon double in price. (I haven't discerned how soon 'soon' is there, but I believe it to be more than a week. Probably not 2.) The contents will be the same, but the price doubled. In essence you double your 'Gift of Gold' over the more expensive offer.
Pick your purchase day carefully - e.g. the Inquisitor you are looking for, or Platinum packs for building above Level 26. On that day, purchase everything you can at that price - however expensive they are (in the sense of e.g. some packs have more boosts than others) and whatever they contain, they are all much cheaper than the day after you purchase - at which time you will have to wait the entire cycle of time before the same packs at that price point return.
This is not to say that there are no sales. There are. Few and far between. They seem to follow holiday or sale days. (As do special 1 hit assailants. [Whomever thought up SnowCreeps was brilliant!])
Some I can think of or have seen:
- New Years
- May Day ('ish, Easter to some.)
- Black Friday
- Boxing Day (or Week)
Note that not all of them occur all the time, and sometimes are no better than regular packs. Choose carefully, as your pack prices are going to revert the next day, as above. Given that, although some sale packs cost more than the lowest price (but contain more than x times the value and contents), make sure the last pack you purchase is the cheapest. (See above.)
[IIRC, Boxing Day 2017 had good deals, 2018 not.]
Pay close attention to (your) candle levels - normal packs max out at 170'ish, sale packs often have 500 and more, and some have more than one type of candle. If it's not your candle type, you may want to pass as offers are going to decrease, if you purchase. If it is your candle type - buy all you can, they will never be cheaper. [You need 1,545 of them.] And Vigo (Scout) is something everyone needs. Eventually.
Some samples I can put my fingers on quickly:
(After purchase? Or 1/4 price equivalent?)
If you are purchasing multiple packs, be very careful ... the same pack will still be available, but at the lowest tier, not the tier you just bought at. Moreover, many other packs will be duplicated at much poorer deal levels. It is extremely easy to get confused or mis-click and buy a poorer pack - at which point the pack you intended to purchase will have disappeared in favour of these poorer packs.
The only way I have been able to keep things the simplest and most clear is to take screenshots of each pack I intend to purchase, first, and refer to them as I go. With Windows utilities like Snipping Tool and Linux equivalents, it is easy to press a key, draw a square, and Ctrl-V into a document. Watch the price point and Gift of Gold level to distinguish between the otherwise identical offers.
At the same time,
sometimes the same pack is indeed offered again - you have to watch carefully. At New Year's I was able to buy the same primo (candle) pack, twice, all but max'ing out the candles for my inquisitor.