fixedprice
adjectiveUK /ˌfɪkst ˈpraɪs/
US /ˌfɪkst ˈpraɪs/
A fixedprice thing costs the same amount every time, and the price does not change.
The toy store sells fixedprice items, so you always know how much they cost.
OTHER MEANINGS
2. A price that is agreed in advance and cannot be changed later.
The builder gave us a fixedprice for the whole job.
3. Describing a contract or deal where the total cost is set ahead of time.
They signed a fixedprice contract for the new roof.
4. A store or service where every item costs the same amount.
The fixedprice shop sells everything for one dollar.