Mayweather vs McGregor: Prepare the cash prize
Jelly, &nbsp;92&nbsp; 75 bytes

⁽©Ḍṃ“_= ”x"“€Þ‘x2,6¤;"⁾_|x1,7¤z⁶ZUŒBY”$“¢=Ḷ't3y&amp;ḅḄȥıḍḄḌṀṡḂẓPḣṁQṘ½ɗ’BT+134¤¦


Try it online!

How?

Step 1. Build a list of the rows of the right half of an empty briefcase, ignoring trailing spaces:

⁽©Ḍṃ“_= ”x"“€Þ‘x2,6¤;"⁾_|x1,7¤
    “_= ”                      - literal list of characters = "_= "
⁽©Ḍ                            - base 250 literal = 2674
   ṃ                           - base decompress (2674 in base: 1='_', 2='=', 0=' ')
                               -   ...yields the list of characters: "_ =    _"
                   ¤           - nilad followed by link(s) as a nilad:
           “€Þ‘                -   literal list of code page indexes = [12,20]
                2,6            -   literal list of numbers = [2,6]
               x               -   repeat -&gt; [12,12,20,20,20,20,20,20]
         x                     - repeat -&gt; ["_"*12, " "*12, "="*20, " "*20, ..., "_"*20]
                             ¤ - nilad followed by link(s) as a nilad:
                      ⁾_|      -   literal list of characters = "_|"
                          1,7  -   literal list of numbers = [1,7]
                         x     -   repeat -&gt; list of characters "_|||||||"
                     "         - zip with the dyad:
                    ;          -   concatenate -&gt; ["_"+"_"*12, "|"+" "*12, ...]


Step 2: transform that into a whole empty briefcase:

z⁶ZUŒBY
 ⁶      - literal space character
z       - transpose with filler (adds the "leading" spaces, to the 1st 2 rows)
  Z     - transpose (back from columns to rows again)
   U    - upend (reverse each row to make it a left-hand side of an empty briefcase)
    ŒB  - bounce (add a reflection of each row with one central character)
      Y - join with new lines


Step 3: Show me the money!

”$“¢=Ḷ't3y&amp;ḅḄȥıḍḄḌṀṡḂẓPḣṁQṘ½ɗ’BT+134¤¦
                                     ¦ - sparse application of:
”$                                     -   literal '$' character
                                       - ...to indexes:
                                    ¤  - nilad followed by link(s) as a nilad:
  “¢=Ḷ't3y&amp;ḅḄȥıḍḄḌṀṡḂẓPḣṁQṘ½ɗ’         - base 250 literal = 1999171130867115278012045759181600763304793110829063794065408
                              B        - convert to a binary list -&gt; [1,0,0,1,1,1,1,1,0,0,1,1,1,1,1,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,1,0,0,0,1,0,0,1,0,0,0,1,0,0,1,1,1,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0,0,1,0,0,1,0,0,0,1,0,0,1,0,0,1,1,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,1,1,1,1,0,0,1,1,1,1,1,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
                               T       - truthy indexes -&gt; [1,4,5,6,7,8,11,12,13,14,15,18,26,39,43,46,50,53,57,60,61,62,66,67,68,85,88,92,95,99,102,105,106,107,110,127,130,131,132,133,134,137,138,139,140,141,144,152]
                                 134   - literal 134
                                +      - addition -&gt; [135,138,139,140,141,142,145,146,147,148,149,152,160,173,177,180,184,187,191,194,195,196,200,201,202,219,222,226,229,233,236,239,240,241,244,261,264,265,266,267,268,271,272,273,274,275,278,286]
                                       -             (that's where the $s at!)