You mean how much more am I paying per pound for my hobby because it tastes better?
Let's see:
$460 in 8 Combo, 2 hog and 1 cattle panel to make an extra good pen that's taller in case I got a climber jumper. We'll call it 31'x 29'. The two hog panels are for the loading shoot and the cattle panel for their shelter hoop.
$260 for two small gates at each end of the shoot.
$50 Used IBC Tote with a broken valve in the next county that has prune juice in it before.
?$20 in parts to make a double nipple auto waterer. Includes spare nipples but I got the plumbing parts with other stuff so I'm not sure on total cost.
$0 old tarps to cover the hoop pen, and old tin for the back side that was here when I bought the place. Two old scrap short 4x4's to hold the gates. Pen in a spot that is in an old growth spruce area that usually grows weeds like crazy (free weeding labor not factored in), so it's good drainage soil on a hill for about 4" then it's clay so we dug 18-24" deep and used a steel bar to compact the clay back in, no concrete bag costs, large dog crate I already have for transporting them.
$20 for the first 5 bales of straw, this is a good price from my neighbor.
$60? T post clips, T post driver (I have not needed to put many in before so I always used a sledgehammer before but looking at about 25 I finally bought one) temp zip ties to hold the panels for final fitment and a scraps rubber bowl.
$180 double door hog feeder.
$60 for the first 200lbs of food because I only had 8 days notice, was expecting them at the end of May. I fit about 185 lbs of feed into the 100lb feeder...

$160? Fuel to get all this stuff... take the pigs to slaughter, and pick up the meat.
$0? Assuming one of my many friends or family will let me borrow a livestock trailer in 4 months.
?? One dewormer treatment in 2 months.
?? AG lime mixed with wood ash to keep the smell down.
= $1,000+ of sunk costs all the folks talking about making $ selling pigs fail to mention and I haven't decided if I need any barbed wire or electric fencing yet. So ignoring all of that sunk startup cost...
$300 for 3 weened and wormed piglets, New Hampshire. Price agreed to in December, I bet they cost more now with the higher feed costs.
$740 for 1,850 lbs of feed mill bulk priced at $.40/lb and pretending I didn't buy the 4 bags at the farm store because I was rushed for time, also assuming prices don't go up by the 4th of July. Typical consumption from 2-6 months is 600-800 lbs each. I live next to a sweet corn farmer so I have free access to unmarketable corn (stuff that didn't sell on the stand and is starting to wrinkle a bit, stuff the worms get into, and the smalls), I don't think much of that will be ready for these 3 but I have many bags of frozen cobs from last year still so I'll share knowing I have free fresh resupply 100' from my door in August. Plus scraps and garden overflow I'm hoping to supplement about 150lbs of feed costs.
$35?? Electric pump cost to get the well or rain water into the 275 gallon IBC Tote.
= $1,075 cost to market weight (200-260 lbs)
So I used to buy market feeders from a 4H kid but that source isn't available anymore, but processing two years ago was about $2/lb for what we actually got in meat. Roughly we would pay $3/lb. This includes costs for some smoking and sausage seasoning with premium vacuum sealing. Since I don't have current prices but know it's higher let's call it $2.50/lb processing to the table.
Will sell the biggest pig, markets expecting $90 per hundred weight this summer so $90x2.5 (~250 lbs)
= $225 income (let's be real this isn't profit) offsetting costs. This seems off based on what we used to pay and craigslist adds for $300-400 but let's roll with it.
So $1,075-$225=
$850 for 500lbs of butcher processing typically results in 360 lbs of meat x $2.50 to table =
$900 processing cost.
So if I did all that right it's $1,750 out the door cost for 360 lbs of higher quality meat.
$1,750/360 = $4.86/lbs. (Excluding $1,000 of "other" costs you could call long term ROI I suppose.)
I built the pen big enough to grow out 8 at a time to sell 5 or 6 in future years if I want. This year it's a hobby where my son gets to learn where his food comes from. Priceless. Also worst case some other crazy world event happens and further destroys the food supply this year and we'll have more than pot chickens to eat for a while.
The YouTube videos claiming to make thousands selling pork are likely not counting all of their actual cost, let alone their labor time. Or like you mentioned maybe their buddies with a scraps food supply...