Dialga

A full estimate: 7 sales we counted in the last 90 days, weighted toward the most recent.

Recent sales broke from the earlier level, so the estimate restarted from them on Oct 9 (2 sales since). It stays at limited evidence until 5 sales since.

Recent sales: the middle (median) of the last 3 sales we counted (Sep 22 to Oct 9), each adjusted to typical eBay auction prices: Buy It Now and auction-house prices are moved by the gap we measure between venues in this era. The sales list shows the prices paid.

Checked on 1,692 estimate-to-next-sale pairs for grades with 5 to 8 sales in 90 days, Diamond & Pearl to HGSS, from Jan 1, 2025 to Oct 15, 2026: half the next sales landed within 20 percent of the estimate at the time (as of Oct 18). A record of past estimates, not a guarantee for this card.

Estimates with limited evidence had a median error of 20 percent on 25,291 past cases (Jan 1, 2025 to Oct 16, 2026).

Sales in the last 90 days ran from $307.51 (Sep 9) to $1,200 (Oct 9) (7 sales, prices paid).

Evidence: strong means at least 4.5 effective recent sales (older and clustered sales count for less) with a spread under 0.15; moderate, at least 2.8 with a spread under 0.30; limited, anything less. The basis (sales of this grade, or estimated from similar cards) is stated separately.

See how close we came for similar grades

What these words mean · Methodology