Like @ctuser1 I also have a Brother monochrome laser printer/scanner/copier that I bought new a few years ago. They often go on sale for less than $100. I can't remember if I ever used the scanner, but the laser printer is solid.
I agree that Brother lasers are great, and I’ve actually been tempted to get one of their multifunctions. Unfortunately, everyone and their mother has apparently had the same idea during the lock-down. While supply-chains have recently gotten a bit better stocked, I haven’t found the same sub-$100 deals that used to be relatively common.
My first brother MFC was one of those sub-100 deals. After that one died, I switched to using the higher end models.
e.g. the MFC-L2710DW is $200 regular priced, and will go < $100 on smoking hot deals.
https://www.staples.com/brother-mfc-l2710dw-compact-monochrome-laser-all-in-one-printer-with-duplex-printing-and-wireless-networking/product_2764646The next leg up is L5700:
https://www.staples.com/Brother-MFC-L5700DW-Mono-Laser-All-in-One-Printer/product_2072517, regular priced @$320, and generally much harder to find deals on. You can, maybe, get it for $250ish.
For the extra money, you get the ability to use a much higher capacity toner with lower per page cost (TN-850 with 8000 pages, vs TN820 with 3000 pages) and duplex scanning/copying. I also found printing large pdf's were frustratingly slow on the lower end models (memory issue).
So, last time I had my printer die, I got the MFC-L5900DW and added additional memory (very easy and at that time memory prices were cheap @$30 or so). This was a $400 model that I got for a little below $300 on sale + coupons. Total setup was around $325 or so.
Now, I can throw massive pdf's at it and it runs pretty fast to churn that out. Yes, it cost me $250'ish extra. I justify that by thinking it has already served me for 7 years and will likely go on for another 7, fingers crossed. Of course, there also was the "I deserve it because I am a geek who deserves his toys" thing going on :-D...
tl,dr; I wrote all these to basically say that the higher end models (better built, lower per page cost, more features like duplex scanning on my MFC L5900DW) may make sense if you print a lot, and plan to use these features. :-D