Around version 7.0 (? just guessing) SuSE became paid only distribution (i.e. you had to pay to get the copy), after several releases SuSE came back to free + paid model.
Now -- the most important to me, what was the first paid-only version, and also interesting, what was the last paid-only version?
Editors, please do not "fix" the spelling of SuSE, back then it was SuSE not SUSE (not sure about end of paid period though).