At each stack of 100 Shimmer, the Black Market offers you contraband that only Chem-Barons can use. Chem-Barons gain max Health for each Black Market you pass on.
3
Shimmer per Combat: 15 or 35; Health per Skip: 20
4
Shimmer per Combat: 15 or 50; Health per Skip: 60
5
Shimmer per Combat: 20 or 70; Health per Skip: 100
6
Shimmer per Combat: 25 or 90; Health per Skip: 150