Questions about example sentences with, and the definition and usage of "Imac"

Q: I bought the iMac was for video chat with the large screen, but one of the APPs didn’t work with the build-in camera. The salesmen in the Apple store were no patient to help with the issues about the APP. I spent several hours without figuring out what the problem was. Calling for customer service is a big headache nowadays. You either have to wait for a long hold, or you must wait for their reply in several days. The customer service of the Apple company did the same. No customer service telephone number was provided on the manual and the desktop help button. I have to wait for someone to call me back next day. Finally, I found a technician through the text message box. We texted back and forth for more than two hours. The technician concluded that it’s the APP’s issue rather than the computer’s. He suggested me to contact the APP developer. I think the issue won’t be solved in a short time. soa natural?

Q: I sold the iMac of late 2012 model using Japanese flea market app called “Merukari”.
My initial plan was to send it to apple when I bought M1 MacBook Air, but the discount was only $20.
This time, Sold price by using Merukari was a little less than $200, it became about 10 times. soa natural?

Q: The new iMac has been released. The philosophy of both iMacs look similar, but this photos show us that technologies has made progress. soa natural?