Intel core 2 Duo E6600 is processor released in 2006 , and intel i5 in 2009.How can those be great processors and basis of great computers now in 2019?You can basically buy new processor for 60-70 USD that is better than that, like Intel Pentium G series that is very good value for money.
WoW Classic is actually not demanding at all, and it is less demanding than retail WoW.
I have know for quite a while about people running private servers without the patches or up to certain patch, due to lack of time i didn't delve deeper but i cannot imagine what "classic" would mean at this point. I don't think asking money for this is a good idea, unless its a sanctioned official thing, but i rather play something else at this point.
Yeah private Vanilla servers are still very popular, that is why Blizzard decided to release Classic servers ( starting with patch 1.12)as naturally they want their piece of cake, as they saw that there is still huge demand for Classic Wow.
Regarding asking for money, all you have to do is to have active subscription and you have both retail and Classic WoW available.And if you dont want to pay WoW subscription with a real money, you can always pay with gold, and it is fairly easy to farm it in retail WoW.For the last 6 or 7 years i haven't spent 1 cent on WoW, all my gametime comes from ingame gold.
BTW, if someone plans to play Classic WoW and wants to reserve some cool name, you can already do it, since last night.You can only reserve 3 names though.