How much does Songhai cost in AoE3?

1,200 food, 1,000 coin, 105 seconds (AoE3: Definitive Edition 100.19.18309).

Age-up

Songhai

Songhai (tech ID DEAllegianceSonghai3) is an age-up in AoE3: Definitive Edition 100.19.18309 costing 1,200 food, 1,000 coin, 105 s to research at the Town Center. Effect: Advances to the Fortress Age; Ships 1 Huge Chests of Coin; Ships 2 Chests of Coin; Removes: Songhai. It hands over about 700 resources' worth.

Quick answers (3)

How much does Songhai cost in AoE3?: 1,200 food, 1,000 coin, 105 seconds (AoE3: Definitive Edition 100.19.18309).
What does Songhai do in AoE3?: Advances to the Fortress Age; Ships 1 Huge Chests of Coin; Ships 2 Chests of Coin; Removes: Songhai. The game says: "Chests of 700 Coin"
What is the tech ID of Songhai?: DEAllegianceSonghai3.

Chests of 700 Coin

What it does

Advances to the Fortress Age
Ships 1 Huge Chests of Coin(unit)
Ships 2 Chests of Coin(unit)
Removes: Songhai
Removes: Songhai
Gives: DE Allegiance Songhai Unlock Shadow

What it hands over

1 × Huge Chests of Coin500 each
2 × Chests of Coin100 each

Total ≈ 700 resources — units at their train cost, crates and animals at what they hold.

Cost: 1,2001,000
Research time: 105 s
Game ID: DEAllegianceSonghai3

Researched at

Town Center

Civilizations

Source: techtreey.xml and the Home City files, AoE3: DE 100.19.18309 (build 25040513).