Well, you have 3 now
What exactly did they quote? I did strut jobs before. They are pretty easy unless the compressors are too beat up. Refuse beat up compressors if you end up renting them. Agree to only rent ones which look like new.
In Ontario, Canada, the safety certificate requires that the car not bounce more than 2ce when certified for sale. Push down on each corner with both hands and all your weight and release. If it does not bounce more than 2ce, it is safe to drive.
If you end up needing struts and strut mounts, KYB sells them for less than a dealer. You need a spring compressor, they can be rented. Shop around.
Courtecy Nissan and other online retailers sell OEM parts at discounted prices. Rock Auto has generic parts. Stay away from Monroe and no-name brands. Stick with KYP if you can. HTH.