Long time reader, first time poster but I couldn't ignore such a glaring mistake.
Ryzen prices haven't been that high in quite some time, with the 1800X usually available for $349 and the 1700X available for $299 (at least at amazon) and even cheaper if you have a Micro Center nearby.
You said: "There is little point in purchasing the 1700X at $360 or the 1800X at $460 given we've found all three Ryzen 7 models hit the same overclock of around 4 to 4.1GHz."
You then linked to newegg, but if you bothered to actually click on the very links you posted, you'd see the listed prices are $299 and $349 respectively.