I think you would have to look at:
Kuemper traded for Connor Timmins a 1st and a 3rd
F Anderson traded for a 1st and 2nd
Lehner for the 21st overall pick and David Legwand
Schneider for the 9th overall pick
Martin Jones traded for a 1st and Sean Kuraly
Varlamov for a 1st (11th Overall) and a 2nd
Bobrovsky for a 2nd, 4th and 4th
Campbell for a 2nd, 3rd and T Moore
Elliott for a 2nd and 3rd
But the one that sticks out for any Blues fan
Ryan Miller and Steve Ott for Halak, Stewart, Carrier, a 1st and 3rd.
I think those are the
best comps, but I think the Blues would (correctly) argue that none of them are very close comps.
Not a single one of those guys had taken their team to the Final prior to being traded.
Outside of the bolded Miller trade, none of those guys had multiple 50+ start seasons prior to being traded. There is tons of talent on that list and at the time of the trades a lot of them were really good bets to be starters, but none of them had entrenched themselves as year-to-year starters at the time of the trade.
Kuemper had injury issues and was 3 years removed from a starting more than half his team's games. His numbers dipped the year before the trade.
Freddie had a great 53 start sophomore season then tandemed with Gibson the next year (before being traded).
Bob had a great 50+ start rookie year and was then relegated to the backup behind Bryz the following season before being traded. His numbers suffered in year 2.
Elliott was 5 years removed from his lone 50+ start season (split between 2 NHL teams).
The rest had never had a single season as a starter, much less multiple. Again, tons of talent in that group. Lots of guys giving every indication that they would become a legit #1. But they hadn't actually proven it.
Binner has three 50+ start seasons plus the 56 game COVID season where he played at a 60 start pace. He handled a starter's load for half a season when he took over as a rookie. In his 5 seasons since, he's handled the starter's workload 4 times. 2021/22 was the only year that he lost the net and he capped that season by playing out of his mind in the playoffs for a couple weeks before getting injured. He's had his share of downs and he wasn't great in 2022/23. We can debate 'how good' of a starter he is, but he is objectively more of an established starter than that entire list was at the time they returned those packages (excluding Miller).
He's also under contract for 3 more seasons, while the bulk of that list is comprised of guys who needed a new contract but had teams that wanted to move in a different direction. The lone example of a long-term starter was a pending UFA moved at the trade deadline.
Like I said, you are correct that those are the best comps. But none of them really do much to set the marketplace for an established Cup-winning #1 who has term and is coming off an excellent season. I totally get why other teams would want to stick to those comps, but I also totally get why the Blues would say that none of them accurately compare to the asset we currently hold. That disconnect is why I'd be listening to offers but don't think that a trade is likely. Realistically, I think that the most likely chance of Binner being traded involves him as 1 piece of a multi-piece true blockbuster.