Flag Building Costs in Rise of Kingdoms KvK
(Assumming that your Alliance Tech is maxed)
| Flag |  Food |
 Wood |
 Stone |
 Gold |
 Crystal |
 Coin |
| 1 → 10 | 75,000 | 75,000 | 56,250 | 37,500 | 75,000 | |
| 11 → 20 | 75,000 | 75,000 | 56,250 | 37,500 | 150,000 | |
| 21 → 30 | 93,750 | 93,750 | 70,350 | 46,875 | 7,500 | – |
| 31 → 40 | 93,750 | 93,750 | 70,350 | 46,875 | 11,250 | – |
| 41 → 50 | 112,500 | 112,500 | 84,375 | 56,250 | 15,000 | – |
| 51 → 60 | 112,500 | 112,500 | 84,375 | 56,250 | 18,750 | – |
| 61 → 70 | 131,250 | 131,250 | 98,475 | 65,625 | 22,500 | – |
| 71 → go | 131,250 | 131,250 | 98,475 | 65,625 | 26,250 | – |
| 81 → 90 | 150,000 | 150,000 | 112,500 | 75,000 | 30,000 | – |
| 91 → 100 | 150,000 | 150,000 | 112,500 | 75,000 | 33,750 | – |
| 101 → 110 | 163,750 | 168,750 | 126,600 | 84,375 | 37,500 | – |
| 111 → 120 | 168,750 | 168,750 | 126,600 | 84,375 | 41,250 | – |
| 121 → 130 | 187,500 | 137,500 | 140,625 | 93,750 | 45,000 | – |
| 131 → 140 | 187,500 | 187,500 | 140,625 | 93,750 | 48,750 | – |
| 141 → 150 | 206,250 | 206,250 | 154,725 | 103,125 | 52,500 | – |
| 151 → 160 | 206,250 | 206,250 | 154,725 | 103,125 | 56,250 | – |
| 161 → 170 | 225,000 | 225,000 | 168,750 | 112,500 | 60,000 | – |
| 171 → 180 | 225,000 | 225,000 | 168,750 | 112,500 | 63,750 | – |
| 181 → 190 | 243,750 | 243,750 | 182,850 | 121,875 | 67,500 | – |
| 191 → 200 | 243,750 | 243,750 | 182,850 | 121,875 | 71,250 | – |
| 201 → 210 | 262,500 | 262,500 | 196,875 | 131,250 | 75,000 | – |
| 211 → 220 | 262,500 | 262,500 | 196,875 | 131,250 | 78,750 | – |
| 221 → 230 | 281,250 | 281,250 | 210,975 | 140,625 | 82,500 | – |
| 231 → 240 | 281,250 | 281,250 | 210,975 | 140,625 | 86,500 | – |
| 241 → 250 | 300,000 | 300,000 | 225,000 | 150,000 | 90,000 | – |
| 251 → 260 | 300,000 | 300,000 | 225,000 | 150,000 | 93,750 | – |
| 261 → 270 | 318,750 | 318,750 | 239,100 | 159,375 | 97,500 | – |
| 271 → 280 | 318,750 | 318,750 | 239,100 | 159,375 | 101,250 | – |
| 281 → 290 | 337,500 | 337,500 | 253,125 | 168,750 | 105,000 | – |
| 291 → 300 | 337,500 | 337,500 | 253,125 | 168,750 | 112,500 | – |
| 301 → 310 | 356,250 | 356,250 | 267,225 | 178,125 | 187,500 | – |
| 311 → 320 | 356,250 | 356,250 | 267,225 | 178,125 | 187,500 | – |
| 321 → 330 | 375,000 | 375,000 | 281,250 | 187,500 | 187,500 | – |
| 331 → 340 | 375,000 | 375,000 | 281,250 | 137,500 | 137,500 | – |
| 341 → 350 | 393,750 | 393,750 | 295,350 | 196,875 | 187,500 | – |
| 351 → 360 | 393,750 | 393,750 | 295,350 | 196,375 | 137,500 | – |
| 361 → 370 | 412,500 | 412,500 | 309,375 | 206,250 | 187,500 | – |
| 371 → 380 | 412,500 | 412,500 | 309,375 | 206,250 | 137,500 | – |
| 381 → 390 | 431,250 | 431,250 | 323,475 | 215,625 | 187,500 | – |
| 391 → 400 | 431,250 | 431,250 | 323,475 | 215,625 | 137,500 | – |
| 401 → 410 | 450,000 | 450,000 | 337,500 | 225,000 | 225,000 | – |
| 411 → 420 | 450,000 | 450,000 | 337,500 | 225,000 | 225,000 | – |
| 421 → 430 | 468,750 | 4,688 | 351,600 | 234,375 | 225,000 | – |
Credits: Abused Panda #0936
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