Great question. In most commercial-grade setups, a recycled plastic seat adds about 20% to 45% to the upfront cost compared with a standard park bench. For a typical 6-foot bench, a standard model with a steel frame and wood or metal slats usually runs around $350 to $650. The same style with a recycled plastic seat tends to land between $550 and $950. So in real numbers, you are generally looking at a $200 to $300 premium per bench.
The main reason is material cost. Recycled plastic lumber is more expensive to manufacture than standard wood slats or painted steel, especially when it has UV stabilizers, color-through formulation, and stainless steel hardware. Fully recycled plastic benches without a separate metal frame can cost even more, often $700 to $1,300.
That said, the purchase price is not the whole story. Recycled plastic seats do not need to be repainted, sealed, or replaced as often as wood, and they resist rot, insects, moisture, and graffiti much better. Over 10 to 15 years, many park managers find the total cost of ownership is actually lower for recycled plastic, even though the initial price is higher.
So if you are comparing only the upfront price, a recycled plastic seat model will usually cost a few hundred dollars more than a standard park bench. If you are comparing lifecycle cost, the gap shrinks a lot and sometimes flips in favor of recycled plastic.