No. Pelia moss is not expensive because it can be grown anywhere in moderated water. Smart cuts of the leaves are enough to develop an entire plant. The cost may differ depending on the demand and supply. Higher demand makes the aquarist produce more plants, eventually reducing the plant cost. Also, the Pelia moss is mainly found in the warmer region, so if you plan to buy it in the cold area, the plant may cost more because it requires special arrangements to maintain healthy growth.