newegg.com has 4TB WD Red Plus NAS 5400 RPM 3.5" Internal Hard Drive (WD40EFZX) for $97.99 – $8 = $89.99, with $8 off w/ promo code 93XRZ35, Shipping is free.
https://www.newegg.com/red-plus-wd40efzx-4tb/p/1B4-005X-001D3?sdtid=152
t is $1 more than previous frontpage deal.