A month ago i probably would have said that it's worth every penny, and by far in my collection the best smelling scent and all around loved, guaranteed compliment scent. The bottle i have still is, but i've recently discovered the HUGE difference within the batch numbers of aventus. I smelled the "pineapple" batch, which is utter crap and watered down compared to my E01 smoky batch (this is my personal opinion of course).
I feel like minus the batch variances, $350 w/tax for a 4.2 oz is worth every penny to me, since the E01 smoky batch smells amazing, especially on my skin (it smells great just spraying it on a piece of clothing too). it projects well, stays consistently great smelling from the complex smoky leathery pineapple top note to the rich vanilla amber base note. I've lost count of how many compliments i get / great encounters i have from wearing this now. Of all the scents i have this still takes the top. I kinda went on a buying spree trying to get something that'll top it but so far nothing, lol (i now have 40+scents, including Pure Distance M, Clive Christian X, Guerlain Bois D'Armenie, and MDCI Ambre topkapi which are in the same ball park price wise, and to me my aventus is way more worth it.)
The other batch i smelled was super watered down, plasticky, and pineapple-generic. I can totally see how people would be underwhelmed if that's what they had smelled. For something like that it is definitely not worth $300+, at around $100 maybe. So yeah. Basically, if you get the "real" batch that where the hype is deserved, then its worth every penny and blows most of the stuff out there out of the water. If you get the generic watery batch though...(which i suspect most of you who think its just meh probably smelled) then yeah, not worth the hype or price.