Looks like the A1 brand ones are, yeah. But don't just look at the A1's, look for ARP L19's. Pretty sure in the DSM world they are slightly cheaper than the A1's.
Do you need them, probably not, but IMO why not, you'll never need anything else again, ever. Using that same mindset, did you really need a 4" FMIC?
j/k. It's just you'll never have to worry about head studs ever again, no matter how big you go 5 years from now.
I did a quick search and didn't see the ARP's on any of the site vendors websites, but did see them on a competitors website for $219, which saves you $30. And I'm sure one or more of our site vendors would be willing to match that price.
And if it makes you feel any better, yours are cheaper then the ones for 1G's