I made about 40g off of 120 of those divine envelopes, and that was doing the whole shebang -> Buying black lion MF boosts, SW, everything (had about 957% MF). It was kind of disappointing. I feel like if I was being efficient, I just would have bought my 8 every day and sold on the AH. Extracting that 50s per envelope is a lot of effort, and kind of sickening when I realized I was using a cash shop bonus as part of it (I know you can get it through other means, in fact I did, but I don't want to waste my miniatures on them and/or spend time farming keys on map completion/story) .
I think I made a paltry 2-3g off of my smaller envelopes I got from doing the race and lighting events each day. I was probably spending 40 mins a day on this festival and only getting a few extra gold per day. I probably could have made up the difference by running fractals or being super focused on better metas (and could have made close to half, if not more, just buying the 8 envelopes and being done with it).
I feel like I could easily make more cash grinding just about any other festival, and that's disappointing, especially with the effort of completing SW metas and going through the trouble of buying & gathering all those buffs from my bank, guild traders, etc. I feel like the fully boosted profit should be the base profit and it goes up from there.