diff --git a/M01_MasterData/M01_MasterData_UI_Test_A.ts b/M01_MasterData/M01_MasterData_UI_Test_A.ts
index 8ca8a183..0b9abe99 100644
--- a/M01_MasterData/M01_MasterData_UI_Test_A.ts
+++ b/M01_MasterData/M01_MasterData_UI_Test_A.ts
@@ -15,7 +15,7 @@ import {
 } from "./M01_MasterData_UI_Logic_Api";
 import { formatNumber } from "./M01_MasterData_UI_Logic_Edit";
 import { hasPickable, pickPanel, swappedRow } from "./M01_MasterData_UI_Test_Pick";
-import { tt } from "./M01_MasterData_UI_Test_Text";
+import { plainReason, tt } from "./M01_MasterData_UI_Test_Text";
 
 type Step =
   { kind: "job" } | { kind: "ask"; spec: LogicInput } | { kind: "pick" } | { kind: "result" };
@@ -107,7 +107,7 @@ function wizard(host: HTMLElement, one: LogicOne): void {
     } else {
       const box = el("input", {
         className: "m01-test__input",
-        attrs: { type: "text", inputmode: "decimal" },
+        attrs: { type: "text", inputmode: "decimal", placeholder: tt("Enter_Value") },
       });
       box.value = values[name] ?? "";
       box.addEventListener("input", () => changed(box.value));
@@ -154,7 +154,7 @@ function resultView(answer: CalcAnswer): HTMLElement[] {
         className: "m01-test__reasons",
         children: [
           el("strong", { text: tt("Result_Stopped") }),
-          el("div", { text: answer.reason }),
+          el("div", { text: plainReason(answer.reason) }),
         ],
       }),
     ];
diff --git a/M01_MasterData/M01_MasterData_UI_Test_B.ts b/M01_MasterData/M01_MasterData_UI_Test_B.ts
index 262cdf21..5ca6df62 100644
--- a/M01_MasterData/M01_MasterData_UI_Test_B.ts
+++ b/M01_MasterData/M01_MasterData_UI_Test_B.ts
@@ -27,7 +27,7 @@ import {
 } from "./M01_MasterData_UI_Logic_Api";
 import { formatNumber } from "./M01_MasterData_UI_Logic_Edit";
 import { hasPickable, pickPanel, swappedRow, type Swaps } from "./M01_MasterData_UI_Test_Pick";
-import { tt } from "./M01_MasterData_UI_Test_Text";
+import { plainReason, tt } from "./M01_MasterData_UI_Test_Text";
 
 /* ── 원문 표(소요량·계수) 미리보기 — /elements 로 파일을 찾고 /table 로 통째 읽음 ── */
 
@@ -298,7 +298,7 @@ function paint(host: HTMLElement, state: State): void {
     } else {
       const box = el("input", {
         className: "m01-logic__input",
-        attrs: { type: "text", inputmode: "decimal" },
+        attrs: { type: "text", inputmode: "decimal", placeholder: tt("Enter_Value") },
       });
       box.value = state.values[spec.이름] ?? "";
       let timer: ReturnType<typeof setTimeout> | undefined;
@@ -337,7 +337,10 @@ function paint(host: HTMLElement, state: State): void {
     main.append(
       el("div", {
         className: "m01-logic__reasons",
-        children: [el("strong", { text: "멈춤" }), el("div", { text: state.answer.reason })],
+        children: [
+          el("strong", { text: "멈춤" }),
+          el("div", { text: plainReason(state.answer.reason) }),
+        ],
       }),
     );
   }
diff --git a/M01_MasterData/M01_MasterData_UI_Test_C.ts b/M01_MasterData/M01_MasterData_UI_Test_C.ts
index 808410da..99f5da94 100644
--- a/M01_MasterData/M01_MasterData_UI_Test_C.ts
+++ b/M01_MasterData/M01_MasterData_UI_Test_C.ts
@@ -24,7 +24,7 @@ import {
   type FlowKind,
 } from "./M01_MasterData_UI_Test_C_Model";
 import { hasPickable, pickPanel, swappedRow, type Swaps } from "./M01_MasterData_UI_Test_Pick";
-import { tt } from "./M01_MasterData_UI_Test_Text";
+import { plainReason, tt } from "./M01_MasterData_UI_Test_Text";
 import "./M01_MasterData_UI_Test_C_Style.css";
 
 const TEXT = {
@@ -169,7 +169,7 @@ function mount(host: HTMLElement, one: LogicOne): void {
     }
     rest.replaceChildren(...nodes);
     const reason = answer && !answer.ok ? answer.reason : "";
-    stopped.textContent = reason ? `${tc("Stopped")} — ${reason}` : "";
+    stopped.textContent = reason ? `${tc("Stopped")} — ${plainReason(reason)}` : "";
     stopped.hidden = !reason;
   };
 
@@ -255,7 +255,7 @@ function inputColumn(
         className: "m01c__input",
         attrs: { type: "text", inputmode: "decimal" },
       });
-      if (spec.범위) box.placeholder = `${spec.범위[0]} ∼ ${spec.범위[1]}`;
+      box.placeholder = spec.범위 ? `${spec.범위[0]} ∼ ${spec.범위[1]}` : tt("Enter_Value");
       box.value = values[spec.이름] ?? "";
       box.addEventListener("input", () => {
         values[spec.이름] = box.value;
diff --git a/M01_MasterData/M01_MasterData_UI_Test_Pick.ts b/M01_MasterData/M01_MasterData_UI_Test_Pick.ts
index 3b46c80a..c587668b 100644
--- a/M01_MasterData/M01_MasterData_UI_Test_Pick.ts
+++ b/M01_MasterData/M01_MasterData_UI_Test_Pick.ts
@@ -37,14 +37,24 @@ export function swappedRow(logic: LogicRow, swaps: Swaps): LogicRow | undefined
   };
 }
 
-type Brief = ElementBrief & { 구분?: string; 상세구분?: string };
+type Brief = ElementBrief & {
+  구분?: string;
+  상세구분?: string;
+  값들?: Record<string, unknown>;
+};
 
 const distinct = (items: Brief[], key: "구분" | "상세구분"): string[] => [
   ...new Set(items.map((i) => i[key]).filter((v): v is string => !!v)),
 ];
 
-const label = (it: Brief): string =>
-  [`${it.이름 ?? ""} ${it.규격 ?? ""}`.trim(), formatNumber(it.값)].filter(Boolean).join(" · ");
+/** 후보 글 — 값 열이 여럿이면 있는 열을 다 보임(계산은 그 가운데 낮은 값) */
+const label = (it: Brief): string => {
+  const cols = Object.entries(it.값들 ?? {})
+    .filter(([, v]) => v !== null && v !== undefined)
+    .map(([k, v]) => `${k} ${formatNumber(v)}`);
+  const prices = cols.length ? cols : [formatNumber(it.값) || tt("Mat_NoPrice")];
+  return [`${it.이름 ?? ""} ${it.규격 ?? ""}`.trim(), ...prices].join(" · ");
+};
 
 function pickRow(one: LogicOne, line: HoLine, i: number, swaps: Swaps, onChange: () => void) {
   const cond =
@@ -109,7 +119,7 @@ function pickRow(one: LogicOne, line: HoLine, i: number, swaps: Swaps, onChange:
         region: "울진",
       })
     : line.종류 === "재료"
-      ? searchPrice((line.이름 ?? "").split(/[\s(·]/)[0]) // 옛 줄 — 이름 첫 낱말로 자재품목(구분 붙음)
+      ? searchPrice(one.prices[line.요소 as string]?.이름 ?? (line.이름 ?? "").split(/[\s(·]/)[0]) // 옛 줄(고르기 조건 없음) — 품셈재료 이름 · 없으면 이름 첫 낱말
       : searchElements(line.종류, line.이름 ?? "");
   void found
     .then((r) => {
diff --git a/M01_MasterData/M01_MasterData_UI_Test_Text.ts b/M01_MasterData/M01_MasterData_UI_Test_Text.ts
index 80a3337a..a3c80723 100644
--- a/M01_MasterData/M01_MasterData_UI_Test_Text.ts
+++ b/M01_MasterData/M01_MasterData_UI_Test_Text.ts
@@ -29,14 +29,24 @@ const TEXT = {
   Ask_Range: ["범위 {min} ∼ {max}", "Range {min} ∼ {max}"],
   Mat_Title: ["쓰이는 재료·기계", "Materials and machines"],
   Mat_Note: [
-    "기본은 원문 그대로 — 바꿔 보면 결과가 달라짐(저장 안 함)",
-    "Default is the source as is — swapping only changes this trial",
+    "기본은 원문 그대로 — 바꿔 보면 결과가 달라짐(저장 안 함) · 값이 여럿이면 그중 낮은 값으로 셈",
+    "Default is the source as is — swapping only changes this trial; the lowest listed price is used",
   ],
   Mat_None: ["이 공종은 재료·기계를 따로 고르지 않습니다", "No materials or machines to pick"],
   Mat_Default: ["기본 (원문 그대로)", "Default (as in source)"],
   Pick_All: ["(전체)", "(All)"],
   Use_Of: ["이 표의 용도", "Used for"],
   Mat_Price: ["단가", "Unit price"],
+  Mat_NoPrice: ["단가 없음", "No price"],
+  Stop_Missing: [
+    "「{name}」 값을 아직 안 넣었습니다 — 값을 넣으면 계산됩니다",
+    "「{name}」 is empty — enter it to calculate",
+  ],
+  Stop_NoRow: [
+    "넣은 값에 맞는 표 줄이 없습니다 — 값을 바꿔 보세요",
+    "No table row fits these values — try other values",
+  ],
+  Enter_Value: ["값을 넣어 주세요", "Enter a value"],
   Result_Title: ["결과", "Result"],
   Result_Stopped: ["계산이 멈춤", "Calculation stopped"],
   Col_Name: ["이름", "Name"],
@@ -48,6 +58,14 @@ const TEXT = {
 
 export type TestTextKey = keyof typeof TEXT;
 
+/** 엔진이 멈춘 까닭을 설계자 말로 — 모르는 글은 그대로 */
+export function plainReason(reason: string): string {
+  const missing = /입력 「([^」]+)」 없음/.exec(reason);
+  if (missing) return tt("Stop_Missing", { name: missing[1] });
+  if (/맞는 줄 0개/.test(reason)) return tt("Stop_NoRow");
+  return reason;
+}
+
 export function tt(key: TestTextKey, fill: Record<string, string | number> = {}): string {
   const entry = TEXT[key];
   const text: string = entry[currentLanguageIndex as 0 | 1] ?? entry[0];