I’ve actually had just as good of luck with '17s as 18s, but not found either exciting. Admittedly, there’s probably no Barolo I’ve had in both vintages, which would certainly be helpful for comparison. I have just avoided both vintages for the most part, with so many good vintages to choose from or soon to be released.
I still find plenty of crus for under $75, but yes, that is based on W-S low, not averages. At that level, where the wines aren’t particularly hard to find, I don’t know why I’d pay more than the lowest available price all-in. If the discussion is based on average retail pricing that is a different story entirely.
Producers I’ve recently seen under $75, just off the top of my head: G. Manzone, G. Negri, Baudana, Azelia, Natale Fantino, Cavallotto (BB is cru but also the normale I guess), F. Alessandria, E. Grasso.
Then, to pull the list of just one retailer which has good pricing, Saratoga, I see crus under $75 from some of those same producers, as well as: Fenocchio, Porro, Massolino, Spinona, Pira, Vajra, F. Rinaldi, and many more. Some offers may be the less desirable 17/18, others may be prearrival and/or require purchase in 6 pack (less help to someone exploring). Worth mentioning though that there are some attractive recent back vintages in that list as well. And again, this is also just one retailer and expanding to others the list would only grow. That is to say nothing of sales, deals, or coupons, all of which open up a wealth of options.