CatherineH99 wrote:
The area I am in unfortunately does not have an Apple Store.
OK. You didn't say where, but you named a particular repair shop that I'm seeing is located in Rockhampton, Queensland, Australia. If that's the case, the the closest Apple Store would be in Brisbane, which is rather far away.
I would have wanted to see a detailed description of what the issue was. I'm guessing you already ran Internet Recovery and checked to see if the drive was showing up (make sure to select View>Select All Devices) in Disk Utility. If the drive was completely missing, then yes the only thing that can be done is a new SSD unless the SSD was somehow loose from the socket. If I had the tools I'd first open the case and make sure the SSD was properly seated in the socket.
And yes these things do happen. However, with an SSD there can be drive corruption (repairable) or sometimes even a complete catastrophic failure. However, depending on the capacity of the SSD, the replacement cost is nowhere near the price you were quoted, and most people could do this themselves with basic tools (P5 pentalobe and T5 Torx screwdrivers). It's not like the current MBP models, where the SSD is a permanent part of the logic board, although it is a proprietary interface where commodity/industry standard SSDs won't work. Here's a salvage 256 GB SSD sold in the United States for $109:
OWC SSDR12S256S (*) 256GB Apple/OEM PCIe SSD for... at MacSales.com
Other than that, OWC and Transcend have aftermarket replacement SSDs. They do come in funky capacities (240/480/960 GB) but that's not a big deal. You'd need to inquire with OWC about international shipping, but you should be able to find a place that sells the Transcend modules. I found this:
Transcend JetDrive 725 TS240GJDM725 240GB SSD for 15 inch Macbook Pro Retina (Mid 2012/Early 2013)with USB 3.0 Enclosure…
The other thing that can be done is to boot off an external drive. It's not the most elegant solution, but it does work. An external SSD might even be fast enough that it's not noticeable.