If you are going to exceed the limits for charters, e.g. one or two weeks you need to look at the scheduled airlines, from Toronto pretty much AA as the Continental connection at Newark never works, or something like Jet Blue with the problem finding a YYZ-JFK flight vs. one that goes to LaGuardia.
Or you can buy charter, throw away the return and try to find one-way which is dodgy at best.
I presume the $950 is the AC flights weekly to POP non-stop. For non-charter their prices are pretty good when you start to look at alternatives with connections. They through AC vacations have been said to offer upgrades to Executive First for something like $279, though the flights to POP I've seen have all been on one class 757's , maybe they are changing that and if you are going to pay full fare you can go in style.