diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab_Detail.ts b/M01_MasterData/M01_MasterData_UI_LogicLab_Detail.ts
index d4f51430..3fcc3c13 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab_Detail.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab_Detail.ts
@@ -18,7 +18,7 @@ import type {
   TextPiece,
 } from "./M01_MasterData_UI_Logic_Api";
 import { buildEditor, qtyKind } from "./M01_MasterData_UI_Logic_Edit";
-import { formatMoney } from "./M01_MasterData_UI_Logic_Money";
+import { formatMoney, formatPrice } from "./M01_MasterData_UI_Logic_Money";
 import { openPicker } from "./M01_MasterData_UI_Logic_Pick";
 import { tx } from "./M01_MasterData_UI_Logic_Text";
 import { buildFormula } from "./M01_MasterData_UI_LogicLab_Formula";
@@ -206,7 +206,7 @@ const spread = (e: Entry, line?: CalcLine): Entry[] => {
           share: k,
           // 몫 줄 단가 = 단가 × (몫 금액 ÷ 줄 금액) — 곱하기 수량이 몫 금액과 맞게
           ...(line && line.금액 && line.단가 != null
-            ? { price: formatMoney((line.단가 * v) / line.금액) }
+            ? { price: formatPrice((line.단가 * v) / line.금액) }
             : {}),
         }
       : {}),
@@ -230,7 +230,7 @@ function entries(ctx: DetailContext): Entry[] {
       qty: item.수량,
       qtyTag: qtyKind(item.수량) === tx("Ho_QtyTable") ? tl("Tag_Table") : qtyKind(item.수량),
       qtyFrag: [{ text: item.수량 }],
-      price: price === undefined || price === null ? "" : formatMoney(price),
+      price: price === undefined || price === null ? "" : formatPrice(price),
       amount: line ? line.금액 : null,
       extra: false,
       open: (self) =>
diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab_Modal.ts b/M01_MasterData/M01_MasterData_UI_LogicLab_Modal.ts
index 9e6375bb..4af2d533 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab_Modal.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab_Modal.ts
@@ -16,7 +16,7 @@ import {
   type NamedFormula,
 } from "./M01_MasterData_UI_Logic_Api";
 import { formatNumber } from "./M01_MasterData_UI_Logic_Edit";
-import { formatMoney } from "./M01_MasterData_UI_Logic_Money";
+import { formatMoney, formatPrice } from "./M01_MasterData_UI_Logic_Money";
 import { explain, loadTable, type TableRow } from "./M01_MasterData_UI_Logic_Note";
 import { jumpToMaster, type MasterJump } from "./M01_MasterData_UI_Side";
 import { fragmentRow, type Fragment } from "./M01_MasterData_UI_LogicLab_Pill";
@@ -176,7 +176,7 @@ function priceView(ref: string, brief: ElementBrief): HTMLElement {
             ? [el("dt", { text: tl("Modal_Spec") }), el("dd", { text: brief.규격 })]
             : []),
           el("dt", { text: tl("Modal_Value") }),
-          el("dd", { className: "m01-logic__money", text: formatMoney(brief.값) }),
+          el("dd", { className: "m01-logic__money", text: formatPrice(brief.값) }),
           ...(brief.file
             ? [el("dt", { text: tl("Modal_Source") }), el("dd", { text: brief.file })]
             : []),
@@ -247,7 +247,7 @@ function candidateView(
             el("td", { text: it.이름 ?? it.ref }),
             el("td", { text: it.규격 ?? "" }),
             el("td", { text: String(it.단위 ?? "") }),
-            el("td", { className: "m01-logic__money", text: formatMoney(it.값) }),
+            el("td", { className: "m01-logic__money", text: formatPrice(it.값) }),
           ],
         }),
       );
@@ -307,7 +307,7 @@ export function openMaterialModal(target: ModalTarget): void {
     const logicKey = /^로직\((\w+)/.exec(element)?.[1] ?? "";
     const sum = el("p", { className: "m01lab__sum" });
     const setSum = (price: ElementBrief | null | undefined): void => {
-      const unit = price ? `${tl("Modal_UnitPrice")} ${formatMoney(price.값)} × ` : "";
+      const unit = price ? `${tl("Modal_UnitPrice")} ${formatPrice(price.값)} × ` : "";
       if (target.qtyFrag) {
         sum.replaceChildren(`${target.title} = ${unit}`, fragmentRow(target.qtyFrag));
       } else sum.textContent = `${target.title} = ${unit}${explain(target.expr)}`;
diff --git a/M01_MasterData/M01_MasterData_UI_Logic_Money.ts b/M01_MasterData/M01_MasterData_UI_Logic_Money.ts
index ca28a43f..f89b7475 100644
--- a/M01_MasterData/M01_MasterData_UI_Logic_Money.ts
+++ b/M01_MasterData/M01_MasterData_UI_Logic_Money.ts
@@ -9,3 +9,11 @@ export const formatMoney = (value: unknown): string =>
   typeof value === "number"
     ? value.toLocaleString("ko-KR", { maximumFractionDigits: 0 })
     : formatNumber(value);
+
+/** 단가 모양 — 정수로 보이되 200 원 미만은 반올림 오차가 커서 소수 넷째 자리·유효숫자 4 자리 중 많은 쪽(뒤 0 뗌) */
+export const formatPrice = (value: unknown): string =>
+  typeof value === "number" && value !== 0 && Math.abs(value) < 200
+    ? value.toLocaleString("ko-KR", {
+        maximumFractionDigits: Math.max(4, 3 - Math.floor(Math.log10(Math.abs(value)))),
+      })
+    : formatMoney(value);