Which is Cheaper: Yew or Perennial ?

Low maintenance & affordable are ubiquitous in a mission statement.

Why have a perennial garden?  Requires skilled labor to maintain & most disappear in winter.  Per square foot & volume & maintenance perennials are ridiculously expensive compared to the long life-size-maintenance expense of yew topiary.
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Yews survive centuries, perennials survive years.
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Of course Garden Centers & Design-Build-Maintain businesses promote perennials.  Perennial flowers are intoxicating.  And important to their recurring  bottom line.
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Garden & Be Well,             XO Tara
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Went less maintenance than the above.  Used understory trees & groundcover (no mowing) in a checkerboard pattern in the front garden for a young couple with babies in their starter ranch home.  How did they get so smart so young?  Me?  I planted zillions of perennials at their age.  Now, only the hardy (iris, dianthus 'bath pink', lenten rose, fern, peony) remain.  Zillions more blooms with my flowering shrubs & trees & vines & groundcovers.  Love my garden but zero time for much maintenance and became disgusted with the thief of time/money with perennials/annuals and don't get Puppet Barbuda started on the dreadful eco impact of perennials/annuals.  You know, greenhouses, heating/cooling, water, soils, pallets, insecticides, fungicides, fertilizers, 18-wheeler trucks.
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Pic via My French Country Home