2T HDD cheap/cheaper/cheapest

$49

Or so they're popping up today, Seagate probably being the instigator.
Model changes or what not sure the motive or what discrepancies
between older/newer models I encountered from a model# WEB search

Couple bucks tax and that's it (if on newer is applicable).

Seagate BarraCuda 2TB Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s
7200 RPM 256MB Cache 3.5-Inch (ST2000DM008)

The 7200 may be another [mis]direct marketing ploy on these being
actually 5400 drives. Appears to be a basic consumer oriented drive
with a 2-yr. warranty.

Seagate warranty: Which can be Suck City if looking through negative
encounters, ratings and reviews of late with Seagate RMA treatment
policy.

Better/good news is they're showing up on the prime jobbers, and not
their middlemen. You'll get noted or premier service in complaint
issues, rather than being shuffled off into a no-mans-land of
middlemen marketing under the premier storefront placard.

Up to a point, where Seagate takes over -- best verify the drive
serial# that you're in Seagate's database.

OEM middleman merchants don't carry kowtow with Seagate, or WD, and a
warranty is kicked backed to the OEM source, if any then.

Prime merchants are specified so by HDD licensing and rights to sell
within honored conditions and terms of ongoing support.

Last and not least: If you want voluminous marketing and reviews
there's only this and the other "place of colours" to go to.

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Say, your moma don't dance and your dada don't r&r. Where do you go?