You do realize the entire upper dash needs to be replaced after passenger airbag deployment right? The airbag rips through it. I'm pretty sure OEM parts cost for just the 2 airbags, sensors and new dash ends up above $6k. You do not want to reinstall non-oem chinese airbags which may or may not work. You also need to reset parts of the system. It's not a DIY project. The OP didn't make it sound like he wanted to do the work either.
Also at that point the repair shop has already marked your car as salvage, and will have higher insurance costs because of it, assuming it even can be fixed for any kind of reasonable price without taking huge shortcuts. Carfax has already marked the car stating airbag deployment, and good luck trying to find a buyer for it after that. Ask anyone who's bought a salvage car about how much they regret it. I've read many stories on this forum.
Seriously, take the insurance money and buy another car.