Been gaching at perion recently, the outcome has been unreal. Tried 35 tix at kerning one time, like you said... never again.
I didn't happen to save my mesos amount from turning in Red Envelopes but I saved the amount of nx I got from each batch that I farmed. 1. 278 RE - 30,600 NX 2. 108 RE - 22,000 NX 3. 308 RE - 36,600 NX I had a few extra RE's (~80) from farming World Bosses since they drop RE's 100% of the time with NX (mostly 100 NX , and 250 NX), but I didn't save those to count. Total NX: 170k NX (including daily voting from a week start from the event, and some world boss hunting)
only hv a screenshot of my last run but heres them all calculated in excel Cost was calculated by RE times 800k Profit is Mesos earned+ NX earned converted to mesos via 1k:5m rate - the cost doesnt include gach earnings cos im not bored enuf for tat