There are plenty of places who press now 100. This is the advantage of CD's downfall. More and more factories are suddenly user friendly. Small clients become important, when the big ones have started to disappear. Of course making 100 is just about the same price as making 200. Or 300. A lot of it depends on packaging, of course. Disc price is the same, whether one takes 100-300. Time and effort and costs varies with the packaging. Be it hand made, and one saves times and money. Factory made, one saves money and space. Not needing to storage things.
Like some people observed here, hating CD's is more of hipster thing - if you want to call it that.
If you have some label producing boutique raw bm in US, of course it's going to be tape. Or collectible vinyl products.
If you got east- and north european - or perhaps in general, european black metal, It's CD that dominates. Same for industrial for example. You can list handful of small dealers of tapes and vinyl, who'll make 30-200 copies editions, while you got anything from LOKI, TESCO, OEC, COLD SPRING, F&V, FREAK ANIMAL, AUTARKEIA, UNREST, TURGID ANIMAL, and so on and on doing CD's. Year after year. Of course most do also LP and tapes, but every label always saw the benefits and importance of CD as format. Fact remains, that a lot of current vinyl suck ass. As simple as that. Quality of sound is half assed compared to what it could be. Notion that LP is somehow better looking package, is often crushed by sheer amateurism of graphics. Costs of manufacturing and shipping become increasingly unaffordable.
Now thinking, would one want to buy 30 euro LP of generic noise, or look how dirt cheap fucking great CD's are now. One can probably look out for mint CD's and grab 5-10 good albums for same price.
I personally, have always been fan of tape and vinyl, but never hated CD's. The more time passes, I'm even more and more in favor of CD's. And I see this shift of mindset with a lot of people I talk to. Many people who used to be biggest advocates of vinyl, suddenly have started to prefer CD. It happens so often that it starts to be almost like current when people started to get into vinyl. So The upcoming resurgence of the CD, within underground - I would bet on it. It's not going to be huge obviously, but if one looks at the actual benefits of physical formats, CD has many of them.
What comes for sales, I think in micro-level dealings, it doesn't show. If band has potential to reach more, my observation has been that any format will sell 100. Tape may reach 200. Occasionally more, but not often. But CD might move more copies. That is very true in context of metal for example. Of course 100 tapes sells fast, but try to sell 1000 tapes, not to mention 10000. It would never happen. I'm not sure if tape buyers are more adventurous so to say? Since unknown tape sells better than unknown cd. But known names CD has bigger demand than tapes. CD for conservative consumers? Perhaps, hah.... In that sense, I also see how certain fringe underground people simply identify with format. You see the shining digipak of post-industrial release, and conclude "I have nothing to do with THAT", and end up associating with xeroxed j-cards and obscure tapes. Or other way round.