You might have missed the single most important piece of equipment needed for any snake- a thermostat! (Not a thermometer) You need it to keep the heat pad in check and not fly over 100 degrees, injuring your snake. You can buy a cheap one off amazon, but not as reliable as Herpstat in the long run: https://www.amazon.com/MTPRTC-ETL-Ce...tat+jump+start
Your youtuber suggesting not to use a hide probably uses a rack system, right? If not, the youtuber is silly and don't listen to them.
Ball pythons need a hide to feel secure, or a rack system that essentially makes their entire tub a giant secure, dark hide. But even in racks, baby ball pythons require hides nearly 100% of the time up until they grow bigger, if you want to just play it safe and normal, and don't want to deal with feeding and stress issues right off the bat. Every snake is an individual, but better to play it safe and do correct husbandry first than sorry later.
Also, using hides or not completely depends on the size and setup of your enclosure. Are you using a 15qt tub or a 20 gallon glass tank? (I don't recommend going with a glass tank for your baby, at least until he grows larger and is eating consistently)
I'd personally find a good breeder on faunaclassifieds.com and buy them them. Get a feel of the price range for the morph you want.
Snakesatsunset seems extremely overpriced... I just took a look at their albinos, and they are selling baby male albinos for $250. I bought my baby albino for $200 shipped to my doorstep over a year ago from breedingcircle.com, and this year other breeders already sell them for as low as $150 shipped. So it's telling that probably all of snakesatsunset's morphs are extremely overpriced.
Females are always going to be more expensive than males.