QuickBooks desktop and Internet

I currently use QuickBooks Desktop 2017 (I think). I would like to purchase the desktop again at a new date but it's all online or have an annual subscription. My Internet is not reliable and I refuse to be online for that reason. It's very difficult to run a business without Internet but that's the only choice I have till my area receives Internet access. Is there a desktop version still out there to purchase without using Internet and subscription? Otherwise I need to look elsewhere.