Is $2,000 to replace draft inducer motor a fair price?

I'm seeking advice on my 15-year-old Bryant furnace. The draft inducer is making a lot of noise, especially at startup, sounding like tearing paper initially and then changing to a loud hum. I'm wondering if the noise is from a motor bearing or the fan. I've found the motor online for about $300 and the entire assembly for over $800, and I'm looking for reputable places to buy affordable parts. The specific part number is 5SME44JG2006D, and I'm curious if options ending with A or C are compatible. I've also heard these furnaces can have heat exchanger problems and am wondering if that could be causing or worsening the draft inducer issue. The system is loud but still works, and the heat exchanger is under warranty. I would appreciate any knowledge or experience shared.