It sounds like a lot, but I know a good number of people with $20,000 side oilers which are half way (.020 over) to becoming a boat anchors. They are making 530-550 hp (some less). Their engines are "original" (whatever that means) Cobra engines... That said while ours are original the Genesis is cool. All horsepower is expensive, how expensive depends on how fast you want to move. Your 675 hp FE is under $30. per hp. Theirs (mine too) is $36-37.
The most expensive side oiler I personally have ever seen was a "NOS" unit in which every part was brand new. It was $35,000. or $66 per hp. Those are initial costs. Long term costs are another matter. I can take my next rebuild out to .030 and maybe .040 or .050 the time after that. I suspect a standard bore Genesis will go much farther. I need to check but my gut says .080??? So. You can rebuild a 4.2356" bored genesis 4-5 times? 6 maybe. Conversely a "standard bore" side oiler can go 3 or maybe 4. Now how much did that Genesis cost???
Now as these things go we will see costs come way down with Barry and everyone else involved doing the leg work for us. That it made a major magazine is huge. It wouldn't have happened if he hadn't had a ton of faith in Genesis (more than I did). I for one really appreciate it. It wouldn't be unreasonable to expect in a few years to see these things in the 10-12k range with 550-600 very streetable horse power and more. I'm thinking 575 hp roller cam, roller rocker 454 that you never need to take the valve covers off... Imagine how clean your garage floor will be. Thats worth the price of admission.
I have a small stash of FE stuff I was thinking of selling. Intakes, ignitions, magneto, valve covers, etc. I think I might have to hold off. I have a feeling I will be needing them

Thanks Barry...