by-product (noun) by-product: side product
Sinonime: absonant, arbitrary, costing an arm and a leg, dear, excessive, exorbitant, extortionate, extreme, far-out, illegitimate,
illogical, immoderate, improper, inordinate, intemperate,
irrational, out of bounds, overkill, overmuch, peremptory, posh, pricey, senseless, steep*, stiff*, too great, too much*, too-too, uncalled-for, unconscionable, undue, unfair, unjust, unjustifiable, unlawful, unrightful, unwarrantable, unwarranted, up to here, way out, wrongful