Randy pretty well covers ooloos in his linked article.
Actually, the rennaissance should be credited to those 'junk
tourist' examples. I was stationed in Alaska when the Alaska
Ulu company started up. Yes, they are mass produced- and oh
yes,employ many native alaskans in Anchorage. If you want an
inexpensive introduction, by all means patronise them.
Before AUC oolos were a local secret.
A midle of the road example is
www.ulumaker.com- traditional
patterns, tools steel, moose antler handles. Ooloos also make
for handy survival tools.We stamped out several at Airstation
Kodiak and taped them to the flat stock of the ithaca Survival
rifles later commercially copied as the M6.