On this "pro" laptop, though, we should likely be comparing to an MLC drive, closer to the Samsung 970 Pro, though Samsung hasn’t released a 2TB version yet. The older 2TB Samsung 960 Pro is $1100 at Amazon. The 45% markup from Apple is still eye-popping. Of course, Samsung makes their own NAND, so they get profit from both the chip and the card, while Apple has to pay the chip profit to someone else, possibly SanDisk (as in the iMac Pro).
I couldn’t find a comparably-configured Dell laptop, but adding 4 TB of SSD (two slower 2TB SSDs or four high-speed 1TB SSDs) to one of their workstations can run $2700 and $3760, so... not pleasant, but in the right ballpark.