Wish I agreed.
I've owned repair shops in the past and since I can't see your laptop I can't diagnose it. If you feel that today's machines are defective because of 18 month life span on parts then why are you buying them? The common laptop battery is 300 cycles or about 18 months.
You are also opting for one year warranty. Again, I had no issue getting my products repaired compared to other companies.