Compound noun: Wholesale market.
Tukku means ”wholesale” and tori means ”market.” (Tukku can also refer to ”a wad of money.”)
Let’s translate the rest of the example sign, ”Säästetään selvää rahaa!”
Selvää is the partitive singular of selvä, which means ”clear,” ”free” or ”plain.”
Rahaa is partitive singular of raha, which means ”money.”
The literal translation of the whole phrase might be ”clear money to be saved.” But the best translation of the phrase might just be the idiomatic, ”Let’s save money!” The selvää can be thought of as just adding emphasis. If you have a better idea of an idiomatic translation of the phrase, please leave it in the comments.