Sure- I don't mean to imply that it isn't. I can absolutely see how that's inexpensive for 100gbe equipment.
That was more for the benefit of others like myself, who were wondering if "bargain" was comparative, or inexpensive enough that it might be worth buying one next time they upgraded switches. For me personally it's still an order of magnitude away from that.
https://mikrotik.com/product/crs305_1g_4s_in is the sweet spot right now for home users. Four 10g ports and a 1g, you can use the 1g for “uplink” to the internet and one of the 10g for your “big old Nortel gigabit switch with 10g uplink” and one for your Mac and two for your NAS and VM server. ;)
Direct cables are moderately cheap, and modules for 10g Ethernet aren’t insanely expensive.
(Note that the linked MikroTik switch only has 100gbe on a few ports, and wouldn't really classify as a full 100gbe switch to most people)