First and foremost, I looked at the top fans to see what they're contributing over 30 days and what the average drop off is as you get lower on the list. It's a lot more messy now, but even then, that fan-over-fan decrease is roughly 8% average starting from Jotalina's ~16k. We'll note this for later.
I'm going to be extremely conservative in my assumptions here, so bear with me. We know that the average viewership before moving the LS to youtube was roughly 20-25k users. Since the move, it's dropped down to 10k and I think we can be a bit wary and say that only half of those will put money into the show. So like... let's say 5k people decide they want to tip/send a message/etc. (After all, they're watching on YouNow, rather than Youtube or Tumblr, for a reason, right?)
The lowest amount of bars you can contribute during a D or P liveshow is 200, I believe, so that'll be our threshold. (Again, all of this math is really shoddy, because there could be a plateau at any point where users either contribute a lot or nothing at all. I'm guesstimating at best.) This is where I BS and fudge my math a bit more. Split the top fans' contributions by 2 (because this is based off of Dan's numbers and he's done 2 liveshows in that period). From there, each of the top fans contribute on average 8% less as we go down the list until they're contributing 200 bars and then I assume everyone from there on out contributes a minimum 200. I'm doing this over those 5k people we assume are paying in. That math puts us at ~1 million bars per liveshow (I'm rounding down).
The most popular price for bars is $9.99 for 1,200. But like, let's be conservative again and pretend everyone pays $49.99 for 6,500. That means each liveshow earns ~$7,691. Take YouNow's 30% and that's ~$5,384 per live show.
I've said "conservative" about a million times here, but let me clarify just how conservative this is: I am not accounting for the possibility of there being a plateau of like 1,000 people that each give 2000 bars/show (and this is very likely, as a lot of people only put money in for messages and nothing else). I'm also not accounting for the majority of people that buy bars at a higher cost. D&P also have ups and downs. On a particularly dramatic week, they may have/answer more messages than usual.