The reality is that the rifle is worth about $300. A good rule of thumb is to get a scope that costs as much (or more) as the rifle. Leupold makes a VX-Freedom 3-9x40 for $300 that will last at least as long as the rifle will. You can also find them in very good condition but used for about half that price. There is no denying the quality and customer service of Leupold. As for Athlon, I'll leave that to you.
I swear an optics company started that 'rule/rumor' and it needs to go. Just not the case in reality. I have $150 (old revolution) scopes on $600-$800 rifles that are tack drivers at typical whitetail/Mulie distances. I have $800 scopes on $3000 builds that ring a 10" gong at 1200 yards all day. Look at what Michael recommends for his B&M rifles. All fun and games...but that phrase drives me nuts!
Higher prices on optics get you luxuries and incremental improvements in construction, repeatability, and optical quality...usually. It's up to the shooter to decide if they appreciate those differences or need them.
Like
@mdwest said, give vortex a look
Decent scopes can be had for lower budgets and should anything happen, they'll take care of him.
I too received this pearl of wisdom when I got into my first gun-buying forays. This was in France in the 1970's and it was 100% true at the time when scopes were either German (Zeiss, Schmidt & Bender, Nickel) / Austrian (Habicht-Kahles-Swarovski) with good glass and solid steel construction, or early Asian manufacture with Coke bottle bottom glass, utterly unreliable manufacture, fantasist clicks, taking water like sinking boats, etc.
PS: we did not see a lot of American scopes in Europe in those days...
So, the rule/rumor WAS true and sound.
Move forward 50 years to modern Asian productions that use Schott glass, CNC machining of mechanical components and polishing of lenses, Western type Quality Control, etc. and that routinely produce entire product lines for even the biggest German names, and things are different.
I will readily agree that a current Asian production Vortex, Zeiss Terra, Burris, etc. (I too regret Nikon getting out of this market) is light years ahead of even good Teutonic scopes of the 70's and 80's in about any respect, and perfectly fine.
So, what was once true and sound, indeed no longer is...
... although, although... it still makes perfect sense to me to put a $1,000 scope on a $1,000+ rifle because the glass chemistry and coating still reflect (pun fully intended) the price paid
As to the $3,000 scopes with 6x or 8x eye boxes that get you 6x or 8x in a DG scope with 28 mm objective, or monster 20x or even 30x in a PG scope with 40 to 60 mm objective, I must confess that I miss the point... I have yet to understand why a DG scope would need more that 4x, especially with a very narrow objective that does not gather enough light to exploit more magnification without the image getting too dark at dawn or dusk; and why a PG scope would need more than 12x (I was going to say 6x but will grant that 12x can have its usefulness on small PG at 200 to 300 yards). Oh well, modern marketing has me soundly defeated