What i dont understand about these SEO services on blackhat...

The ones that sell backlink packages, how is that any better then just getting something like article builder or GSA for 100$ and get it permanently on auto mode for every website instead of paying around 50-100 dollars for a pack SEO. Whats the difference (not looking at premium services from high PA/DA costing a lot more)? Or am i completely wrong here? Or does article builder simply sound to good to be true.

simple. they do it for you. same with any service
in some cases you could/can do it yourself
others who like to save time, as time is money
have some1 do it for them

I understand, but what i mean is that article builder/GSA also do that for you automatically.

All im wondering is, are the articlebuilder/gsa links created equal quality to the ones of most SEO packets on the marketplace? Because that wouldn't make any sense money, time and performance wise.

Just trying to figure out which choice i need to make SEO package vs tools.