One could argue that pulling 999 crystals’ worth of mods would be a better option just looking at some of the basic math. With grey mods, if Speed drops at all, the Speed stat will never increase as the mod is levelled, leaving a 5* mod maxing out at +5 Speed. Out of those, the mods could be in any color, with a far greater chance to yield grey mods than any other color.
To compare, simming 7 Tier III mod challenges could provide 3*, 4*, or 5* rarities and also in any shape. The Mod Pack also guarantees that all 7 mods will be of the 4* or 5* rarity.
The difference, however, between ordinary mining of mods versus buying the Mod Pack is that the extra crystals used in the Mod Pack guarantees mods that will drop with at least one stat showing and a mod for each mod slot, which increases the odds that at least 1 of the 7 mods will have Speed. Just as simming through 7 Tier III mod challenges could yield 0-7 mods with the Speed secondary stat showing, purchasing 7 mods through the Mod Pack could also yield anywhere from 0-7 mods with Speed showing.
