40 property tour clips of 30 seconds on Wan 3.0 at 720p: $150

Forty 30-second property clips on Wan 3.0 at 720p cost $150.00 on Sume: $3.75 each, one job per listing. fal's list is $0.10 per second at 720p (read 2026-10-09) and Sume bills list x 1.25.

What does each tier cost for 40 listings?

Why does the length matter here?

Wan 3.0 accepts 2 to 30 seconds and Seedance 2.5 accepts 4 to 30, per the Video Router docs; most other models stop at 15. Gemini Omni Flash stops at 10 seconds, so a 30-second tour from Omni is three jobs and three charges, $3.75 at 720p, the same money in a different shape.

What about the starting image?

A tour usually begins with a listing photo, so use image-to-video: on /v1/videos, a frame_images entry with frame_type set to first_frame. The request shape is in the Video generation docs. I have not priced a separate image step because the photo already exists.

How do I sample before 40?

• Run three listings at 480p first: 3 x $1.875 = $5.63.
• Move the best prompt to 720p for the other 37: $138.75.
• Keep the three drafts out of the final count; they cost $5.63 either way.

What about reruns and updates?

Listings change. If a quarter of the clips need a refresh, ten more 30-second clips at 720p are $37.50, and a refresh at 480p is $18.75. Keep the original prompt and image URL with the listing record so a rerun is one request, not a rebuild.

Send an Idempotency-Key per listing so a retried submission returns the original job instead of creating a second charge.

Shorter tours cost less in a straight line. A 20-second tour at 720p is $2.50 and a 10-second teaser is $1.25. Forty listings with a 10-second teaser and a 30-second tour each would be $150.00 plus $50.00, or $200.00 in total. Pick the length per listing type: a studio flat rarely needs 30 seconds.

Record the amount charged per listing next to the listing record. At $3.75 a tour, a sheet of 40 rows should sum to $150.00 before any reruns; a different total means a different tier or length was sent for some rows.