Looks like it was a good deal after all. Right now seems like a decent time to grab miners if you think Bitcoin’s gonna bounce back. If you can buy the miners with BTC, you could potentially flip back to fiat for cheaper in a short time.
Not saying it’s a sure thing, but no one can guarantee Bitcoin will stay around $20k or bounce back in the long run. There's decent support at 20k though, so it might rise in a couple of months.
Also, November could be prime time to shop with Black Friday and all that. Canaan’s got some sick discounts too, their miners are super cheap right now. Just check their site out.