Over the last 90 days, the tracked price per unit for Private Property No Trespassing Sign, (SI-72004) 12x18 Inches, 55 mil Thick HDPS, Made in USA by Sigo Signs ranged from $21.99 to $21.99 (average $21.99), across 1 captured data point since 2026-08-18. Dealophant records the real cost per unit — not the sticker price — so you can tell whether a "deal" is actually cheap per ounce, sheet, load, or count.
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