Gene,
Actually PG2 replacement springs are $14. I just bought a couple Macarri's and the cheapest was $17.
I know Tom Gore and he's a real bonafide airgun guy. He's always looking for ways to make them better. He had a part in the Crosman Nitro piston so he knows what he's doing. He's no snake oil or fly by night salesman.
There was a lot of talk about his PG2 making pro tuners obsolete. Aint gonna happen. I just see his product as another alternative. A really good one at that. Is it worth $69? I think so because it is a drop in kit that doesn't require advanced skills or specialized tools to make a quantum improvement in most guns. He literally had my Diana 34 apart, upgraded and back together in about 10 minutes. The improvement is amazing. I applaud him for some elegant engineering and a product that does what it sets out to do.
Now like I said, it won't replace a real pro tune. I.e., it doesn't hone your compression tube for you or make up for ill fitting pistons. It also won't debur or fit a cocking shoe, Nor will it smomth and adjust a trigger for you. So will there always be a place for a pro tuner? Yup craftsmanship and experience cannot be made from a spring and plastic.
Bottom line for me is any advancement that brings more options to more people so they can enjoy the sport is welcome by me. Plus it is nice to see an honest and hard working airgunner like Tom do well!
Andy Wong aka larspawn