18TB Lowest Index Median, 28TB Best Listing
This week's read: 18TB remains the lowest-median capacity tier, but last week's lowest named deal disappeared and the best current row is now Seagate Expansion STKP28000400 28TB new at $30.36/TB. The index is stable; the deal surface got thinner, so the shortlist matters more than the tier median this week. Data through Aug 14, 2026.
Notable capacity moves
18TB is the lowest current median $/TB capacity tier in the index at $27.72/TB. 18TB posted the clearest 30-day move at -37.4%. The lowest-median index tier is not the same as the cheapest named listing; use the tier view for market shape and the listing rows for actual buy decisions.
Current best-value drives
Current rows with clear condition data: Seagate Expansion STKP28000400 28TB new at BestBuy for $849.99 ($30.36/TB); Seagate Exos ST16000NM000J 16TB recert CMR at ServerPartDeals for $489.00 ($30.56/TB); Seagate ST10000VN000 10TB new at Seagate for $329.99 ($33.00/TB); Seagate IronWolf Pro ST28000NT000 28TB new at B&H Photo Video for $927.95 ($33.14/TB). For new-condition only, compare Seagate Expansion STKP28000400 28TB new at BestBuy for $849.99 ($30.36/TB) and Seagate ST10000VN000 10TB new at Seagate for $329.99 ($33.00/TB). These are not interchangeable: condition and recording tech matter before the lowest $/TB row becomes a buyable recommendation.