Flat rate $10 SHIPPING saves you $$$ on larger orders! Metal die castings on bird feeder can't be chewed by squirrels. Powder coated finish- won't chip or fade. UV stabilized polycarbonate tube won't yellow with age, dependably durable. Metal perches on bird feeder won't hurt birds' feet, can't be chewed by squirrels. Seed baffle keeps seed within reach of birds. Seed port size and design ornithologically correct for birds. Distance from port to perch ornithologically correct for birds. Threaded base on bird feeder allows addition of tray and other accessories. Capacity/port ratio means lots of birds for days.