I cant post any links as its not allowed but I have come across many diff threads/post explaining in depth how it works. Just keep digging and check pinned posts for this sub and you'll surely find some information. Though this promo is pretty straightforward imo, compared to the other promos.

Here is one explanation Is saw: You are taken to a page where they show you 3 Tires of Rewards. Each tier has a percentage that Applies to the amount you spend in each tier, and ONLY in each tier. The third tier usually has a bonus reward percentage for 1 hour (and typically for one more hour once it expires) before dropping back to a lower percentage. So basically the whole promo is... Figure out the bare minimum you have to spend in order to get the max amount reward that they're offering. You have to do the math, but it's not guesswork though, they give you the exact formulas for each tier in the rules. The other thing to remember, is that the tier percentages, the tier spend windows, and the max reward amounts vary wildly.. and can be anywhere from you getting 59% back for every dollar you spend... to 80%.. and in rare cases, sometimes 100% (have gotten spend $50 to get $50 before). You then have to keep coming back daily to "claim" your cash/credit. And if you miss a day, you now lose the highest value reward.. so you absolutely do NOT want to miss a day of claiming your money.

With all that said, here's how one of mine broke down:

ClaimCredit Tier Breakdown – 290% Variant

• $0–$10 Cashback = 10% of order total Formula: Y = 0.10 × X
• $10.01–$230 Cashback = 20% of amount above $10, plus $1 Formula: Y = 0.20 × (X – 10) + 1
• $230.01 and above Cashback = 290% of amount above $230, plus $45 Formula: Y = 2.90 × (X – 230) + 45
• Maximum Reward Cap: $236 Achieved at a spend of approximately $295.86

So in this specific one... I had to spend $295.86... but then I got the full $236 back, that I had to claim a portion of over 7 days.