That's an excellent and very practical question. The upfront price tag tells only a small part of the story. Over a decade, the total cost of ownership hinges on durability, maintenance, and replacement cycles.
Initially, a high-density polyethylene (HDPE) plastic bin is significantly cheaper. You might pay $200-$400 for a sturdy plastic bin, while a comparable galvanized or powder-coated steel bin can easily cost $600-$1000 or more. So, plastic wins on day one.
However, metal bins excel in longevity and vandal resistance. A well-made steel bin in a public urban setting can last 10-15 years or more with minimal care, perhaps needing an occasional touch-up paint. Its weight deters theft and it withstands impacts better. The main cost is the initial investment.
Plastic bins, while resistant to rust and corrosion, can become brittle from UV exposure, leading to cracks. They are more susceptible to damage from fire, severe impacts, and can be easier to steal. In a high-traffic urban area, a plastic bin may need replacement every 3-5 years. Therefore, over ten years, you might buy 2-3 plastic bins.
When you factor in the labor and logistical cost of multiple purchases, installations, and removals, the plastic option's total cost can meet or even exceed that of the single metal bin. The metal bin often becomes the more economical choice long-term, provided the higher upfront cost is feasible.
The break-even point depends heavily on location. A bin in a calm, managed park might favor plastic's lower initial cost. A bin in a bustling, tough downtown district almost always justifies the metal premium for its durability and lower lifetime hassle.
In short: if your budget is extremely tight upfront and usage is light, plastic is a valid choice. For maximum long-term value, minimal maintenance, and high-vandalism areas, the metal bin's higher initial cost is usually justified over a ten-year horizon.