Not that I have seen but let us know if you find one.
The first step in any water filtration project is to have your source water, in this case your well, tested by an outside independent lab that YOU PAY to test your water. "Free testing" "County testing" etc etc are all like pool store testing ... worthless. You can go online and find any number of independent labs that you can send water to and have it tested out the wahzoo for everything under the sun. It is amazing how many people rely on word of mouth or what their neighbor says. Just get it tested yourself.
Then, once you know what's in your water, you can very quickly narrow your search down. Wells need different levels of filtration depending on what's coming up. If you're lucky and the well is good, all you might really need is a good sized sediment trap to keep and dirt and silt out of your plumbing. If the water is hard or contains iron (many wells do), then filtration gets more expensive.
Also, it's a good idea to have an independent well service company come out and inspect the well and pump. The pump is critical to your water source so it should be the thing that you pay the most attention to.