Welcome to forum bencojo! Your post was more than sufficient to prove you are human (or some other sapient creature). As for all of your questions and I'll try to answer them as well as I can.
I do know that Pete does get less money when you get the books through
IndyPlanet instead of the Sluggy Store. He never stated how much of a difference it is, but he also doesn't have to store hundreds of copies of each book nor worry about them going out of print. They do sell for the same amount in both locations.
At this time, MegaTome 1 & 2 and book 9 can only be purchased through the Sluggy Store. As for the others, he may or may not have some in the store. Usually he doesn't have that many copies of ones that are also being sold on IndyPlanet. So if you want to start at the beginning you will have to wait for the store to reopen. I suspect that will occur sometime this month. That's just my feeling though.
I think digital copies would be nice, but I don't know what Pete thinks about it. Maybe someday he might.
Hopefully that answered most of what you were wondering. Now for my boiler-plate...
Anyway [member's name here], now I will tell you about the strange tradition aimed at newcomers.
At one time there were Pesterers who pestered you for poetry, but that tends to be very rare nowadays. Even though you may not be pestered, if you do go and post an original poem --usually haiku but any (clean) type is accepted-- written by you, you will most likely receive a gift in return. The "gift" will most likely be useless or maim you. Whichever it may be, it should be interesting and surprising. Lastly, this strange tradition applies to the pestering not the poetry. You are not required to do anything more to be a member here...unless you want to possibly get a [name of harmlessly fatal item here] or some other type of gift.
Now go forth and do (almost) whatever you want, just don't speculate in Reactions.