Have these as swaps:

1 x4, 3 x5, 4 x4, 5 x5, 7 x2, 8 x6, 9 x2, 10 x5, 11 x4, 12 x4, 13 x3, 14 x5, 15, 16 x2, 17, 18 x2, 19 x4, 20, 21, 22 x6, 23 x5, 24 x4, 25 x3, 26 x4, 27 x3, 28 x4, 29 x4, 30 x6, 31 x4, 32, 33 x5, 34 x2, 35 x6, 36 x3, 37 x4, 38 x3, 39 x3, 41 x16, 42 x13, 43 x5, 45 x3, 46 x5, 47 x3, 48 x9, 49 x12, 50 x19, 51 x5, 52 x4, 53 x7, 54 x8, 55 x4, 56 x6, 57 x10, 58 x4, 59 x4, 60 x6, 61, 62 x3, 63 x3, 64 x6, 65, 66 x4, 67 x13, 68 x28, 69 x4, 70 x5, 71 x5, 72 x7, 73 x3, 74 x4, 75 x5, 76, 77 x3, 78 x8, 79, 80 x3, 81 x5, 82, 83 x3, 84 x2, 85 x3, 86 x8, 87 x3, 88 x2, 89 x3, 90 x7, 91 x6, 92 x9, 93, 94 x3, 95 x3, 96 x5, 97 x8, 98 x5, 99 x8, 100 x6, 101, 102 x5, 103 x2, 104 x3, 106 x3, 107 x8, 108 x4, 110 x2, 111 x9, 112 x5, 113 x2, 114 x5, 115, 116 x4, 117 x3, 118 x6, 120 x2, 121, 122, 123, 124, 125, 126, 127 x3, 128 x2, 129, 130 x5, 131 x6, 132 x3, 133 x4, 134 x12, 135 x20, 136 x14, 137, 138 x4, 139 x5, 140 x4, 141, 142 x6, 143 x9, 144 x6, 145 x2, 146 x6, 147 x6, 148 x6, 149, 150 x6, 151 x4, 152 x5, 153 x3, 154 x8, 155 x4, 156 x6, 157 x6, 158 x8, 159, 160 x2, 161, 162 x4, 163 x2, 164, 165 x2, 166 x3, 167 x4, 168 x6, 169 x2, 170, 171 x5, 173 x4, 174 x4, 175 x5, 177 x5, 178 x3, 179 x5, 180 x2, 181 x4, 182 x5, 183, 184 x4, 185, 186 x3, 187, 188 x4, 189 x5, 190 x2, 191 x5, 192 x7, 193 x6, 194 x6, 195 x3, 196 x7, 197 x4, 198 x2, 199, 200 x6, 201 x3, 202 x4, 203 x3, 204 x3, 205 x2, 206 x5, 207 x3, 208 x8, 209 x6, 210 x2, 211 x4, 212 x6, 213 x11, 214 x7, 215 x3, 216 x5, 217 x13, 218 x6, 219 x5, 220 x6, 221 x4, 222 x8, 223 x7, 224 x6, 225 x6, 226 x4, 227 x4, 228 x6, 229 x2, 230 x5, 231, 232 x5, 233, 234 x2, 235 x4, 236 x2, 237 x3, 238 x2, 239 x4, 240 x2, 241 x3, 242 x4, 243 x5, 244 x6, 245 x6, 246 x3, 247 x7, 248 x7, 249 x9, 250 x5, 251 x2, 252 x4, 253 x9, 254 x3, 256 x6, 257 x9, 258 x3, 259 x4, 260 x5, 261 x2, 262 x7, 263 x6, 264 x7, 265 x8, 266 x2, 267 x7, 268 x2, 269 x6, 270 x2, 271 x4, 272 x5, 273 x5, 274 x9, 275 x3, 276 x8, 277 x5, 278 x4, 279 x6, 280 x7, 281, 282 x3, 283 x12, 284 x18, 285 x17, 286 x16, 287 x7, 288 x8, 289 x5, 291 x2, 292 x2, 293 x4, 294 x8, 295 x3, 296 x4, 297 x4, 298 x3, 299 x2, 300, 301 x10, 302 x3, 303 x7, 305 x5, 306 x5, 307 x2, 308 x6, 309 x5, 310 x4, 311 x10, 312 x4, 313 x3, 314 x7, 315 x2, 316 x5, 317 x4, 318 x6, 319 x3, 320 x13, 321 x12, 322 x4, 323 x5, 324 x3, 325, 326 x2, 327 x4, 328 x8, 329 x6, 330 x7, 331 x7, 332 x9, 333 x2, 334 x7, 335 x2, 336 x9, 337 x2, 338 x4, 339 x3, 340 x5, 341 x3, 342 x4, 343 x8, 344 x9, 345, 346 x3, 347, 348, 349, 350 x4, 351 x4, 352 x3, 354 x2, 357, 358 x2, 359 x4, 360 x2, 361 x8, 362 x2, 364 x3, 365 x9, 366 x7, 368, 370 x5, 371 x3, 372 x5, 373 x5, 374 x7, 375 x3, 376, 377 x5, 378 x8, 379 x5, 380 x3, 381 x2, 382 x7, 383 x3, 384 x2, 386, 388 x5, 389 x2, 390 x7, 391 x4, 392 x3, 393 x2, 394 x5, 395 x5, 396 x6, 397, 398 x3, 400 x6, 401 x4, 402 x2, 403 x2, 404 x3, 405, 406 x4, 407 x3, 409, 410 x5, 411 x3, 413 x3, 414 x2, 415 x5, 417 x5, 418 x8, 419 x3, 420 x3, 422 x4, 423, 425 x3, 426 x7, 427 x4, 428 x4, 429 x3, 430 x7, 432 x3, 433 x6, 434 x5, 435 x5, 436 x5, 437 x6, 438 x8, 439 x8, 440 x7, 441 x4, 442 x6, 443 x7, 444 x2, 445 x7, 446 x9, 447 x6, 448 x2, 449 x6, 450 x5, 451 x6, 452 x5, 453 x5, 454 x3, 455 x7, 456 x10, 457, 458, 459 x3, 460, 461, 462 x5, 463, 464 x7, 465 x9, 466 x6, 467 x6, 468 x6, 469 x3, 470 x5, 471 x3, 472 x7, 473 x7, 474 x3, 475 x3, 476 x6, 477 x4, 478 x3, 479, 480 x4, 481 x7, 482 x4, 483 x3, 484 x4, 485 x4, 486 x6, 487 x19, 488 x11, 489 x2, 490 x3, 491 x5, 492 x4, 493 x2, 494 x14, 495 x19, 496 x9, 497 x5, 498, 499 x7, 500 x6, 501 x7, 502 x3, 503 x4, 504 x9, 505 x2, 506 x2, 507 x3, 508 x7, 509 x6, 510, 511 x9, 512 x9, 513 x6, 515 x6, 516 x9, 517 x11, 518 x5, 519 x5, 520 x5, 521 x9, 522 x10, 523, 524 x3, 525 x5, 526 x6, 527 x5, 528 x3, 529 x3, 530 x4, 532 x8, 533 x8, 534 x8, 535, 536 x2, 537, 538 x8, 539 x4, 540 x3, 541 x12, 542 x4, 543 x7, 544 x6, 545 x6, 546 x6, 547 x5, 548 x4, 549 x6, 550 x8, 551 x6, 552 x4, 553 x7, 554 x10, 555, 556 x3, 557 x5, 558 x5, 559 x12, 560 x16, 561 x3, 562 x10, 563 x18, 564 x16, 565 x13, 566 x12, 567 x10, 568 x17, 569 x2, 570 x3, 571 x3, 572 x7, 573 x5, 574 x5, 575 x3, 576 x2, 577 x3, 578 x5, 580 x5, 581 x3, 582 x6, 583 x2, 584 x8, 585 x4, 586 x8, 587, 588 x3, 589 x3, 590 x7, 591 x3, 592 x5, 593 x2, 594 x8, 596 x3, 597 x3, 598 x2, 599 x6, 600 x9, 601 x3, 602, 603 x7, 604 x4, 605 x2, 607 x4, 608 x17, 609 x7, 610 x4, 611 x4, 612, 613 x7, 614 x3, 615 x5, 616, 617 x4, 618 x10, 619 x7, 620 x4, 621 x2, 622 x6, 623 x7, 624, 625 x10, 626 x6, 627 x2, 629 x2, 630 x4, 631 x2, 632 x2, 633 x6, 634 x6, 635 x3, 636 x2, 637 x4, 638 x2, 639 x2, 640 x2, 641 x3, 642, 643 x4, 644 x4, 645 x2, 646, 647 x2, 648 x3, 649 x7, 650, 651 x7, 652 x6, 653 x8, 656 x8, 657 x5, 658 x8, 659 x11, 660 x6, 661 x2, 662 x5, 663 x2, 664 x4, 665 x2, 666 x2, 667 x7, 668 x7, 669 x5, 670 x3, 671 x3, 672 x4, 673 x5, 674 x7, 675 x6, 676 x3, 677 x3, 678 x6, 679 x3, 680 x2

I'm at that kind of point with my collection, that I'd be ok with a blind trade, say pick one white, send me three random whites or similarly, pick one shiny and send me two random shinies. Yes, I realize that you'd be giving more than getting, but also you gain the advantage that you don't have to worry whether you have something for me or not - because it doesn't matter. Also willing to trade something like six whites of your selection for a random shining sticker.

Also, I'd be willing to buy stacks of extras for a bulk price.

edit. 21.5. Another massive update.