Bests & Worsts Reviews from Amazon

I just bought a new 2019 iMac. I want to transfer all my data off an old Mac Mini and an old Mac Pro that both use firewire. so, I came to amazon and searched for "thunderbolt to firewire adaptor" and the item on this page is what came up. So I bought it, got it, and realized it didn't fit on my new 2019 iMac! So, I did a little more poking around and learned that the item on this page is a Thunderbolt 2 adapter and it doesn't fit on the new iMac (nevermind it has the same little graphic symbol on the adapter that matches the symbol next to the port on my new iMac)! It turns out that the new Macs use Thunderbolt 3. It's so confusing. Lightning, Thunderbolt, USB-C etc etc. Who can keep all this straight. Anyway, Since the item on this page is a Thunderbolt 2 cable, I was wondering if there's a Thunderbolt 2 to Thunderbolt 3 adapter. And it turns out there is. Right here. For $49 painful dollars more... (Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter) https://www.amazon.com/gp/product/B01MQ26QIY/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 So here is the ordering of components and cables that I am now using to connect a Firewire Mac in "target disk" mode to my new imac. 2019 iMac with "Thunderbolt 3" port | Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter | Apple Thunderbolt to FireWire Adapter | Firewire 800 cable | 2008 Mac Pro (with firewire 800 port) And as I speak, the files are being transferred through this frankenstein monster of adapters and cables. I will use a file diffing tool to make sure everything copied successfully once the transfer is completed, but I see no reason why this shouldn't work. But damn. $80 for adapters and cables. But what can you do. Just... ouch. Anyway this scheme does work, albeit at a cost.