Let's say I buy a $50 hotels dot com GC for $50 to trigger an Amex Offer for a $10 rebate. I then use TCB for a 2%/$1 rebate and sell said GC for $40. Do I input my spreadsheet to show a $10 loss, $9 loss, breakeven, or $1 profit? What if I use a cash back Amex and get another 1% rebate? Does it now change to $9.50 loss, $8.50 loss, $0.50 profit, or $1.50 profit? If I use a MR card and later cash out with a Schwab Plat does that make said MR now taxable? Now, what if I buy a $50 hotel dot com GC for $40 from Amazon and again sell for $40? Any difference now that the GC was bought for $40 outright rather than $50 minus $10 via an Amex Offer? And if I use a 2% cashback card on Amazon? Am I now at breakeven or $1 profit? I still find myself confused with all the potential variables so my spreadsheet has multiple columns for each outcome but I have no idea which way is the ‘correct way’ to look at this madness.