A Mill Near Colchester1833Free · sharp to 12.1 × 9.2 in at 300 dpi, uncropped
Cloud study1830–35Free · sharp to 6.9 × 5 in at 300 dpi, uncropped
Mrs. James Pulham Sr. (Frances Amys, ca. 1766–1856)1818Free · sharp to 10.8 × 12.9 in at 300 dpi, uncropped
Salisbury Cathedral from the Bishop's Groundsca. 1825Free · sharp to 6.5 × 5.1 in at 300 dpi, uncropped
Stoke-by-Naylandca. 1810–11Free · sharp to 13 × 10.3 in at 300 dpi, uncroppedReading the board
Each card shows the largest print the Met's file makes at 300 dpi without cropping — that's the sharpness you'd want for something you'll stand close to. The biggest file in this set isMrs. James Pulham Sr. (Frances Amys, ca. 1766–1856), at 3,230 × 3,858 pixels: enough for a 10.8 × 12.9 in print at 300 dpi, or 21.5 × 25.7 in at poster sharpness.
Every page has a size chart against standard frames, the museum record, and the frame and light that make a print look like it cost more than it did. The file itself is free. It always was.