dont get it because i dont want more people to join the business. hehehehe.
nah in all seriousness, its pretty good in the long run. but due to aus being sold at a higher expense (800-950k) then it might be harder to get your money back. i bought my double crystal gb about a week ago and had like 53 elger quests done but now i have 730 and i reckon ive definitely got the money back. i didnt buy all my aus though, i got some from goals and temples.
as long as youre looking forward to putting in the work it definitely pays off and is good for the long run. i can make about 1m+ a day selling crystals if im bothered.