demoAllocation (
    "Distribution: skewed: Nasty mark II (Grandfather)",
    {a     => 30, b     => 20, c => 10},
    {'1.0' => 30, '2.0' => 12, '4.0' => 6, '8.0' => 12}
    );
[download]

Prints:

Distribution: skewed: Nasty mark II (Grandfather)
a:    22 @ $1.00
    8 @ $8.00
    bucket avg: $2.87, deviation: $-0.033

b:    8 @ $1.00
    6 @ $2.00
    2 @ $4.00
    4 @ $8.00
    bucket avg: $3.00, deviation: $0.100

c:    6 @ $2.00
    4 @ $4.00
    bucket avg: $2.80, deviation: $-0.100
[download]

However, allocating 1/2 of each parcel to a, 1/3 to b and 1/6 to c gives a perfect result.