Strictly Profitable

 refers to an unmarked and repeatable quest in Fallout 3.

After completing Strictly Business, Grouse in Paradise Falls pays you for every slave you bring him. He also provides you with the necessary equipment (Slave Collars, Mesmetron power cells). The Mesmetron power cells cost a rather steep price at 200 for 10; but with enslaving one person you gain 250 Caps, making around 50 caps. You can make upwards to 2200 if you use only one cell per person.

Reward

 * Caps

Enslavable NPCs
A list of possible NPCs that can be enslaved with the Mesmetron.(List is unfinished, some listed may not be enslavable for everyone)
 * Flak
 * Moira's Merc
 * Mister Lopez
 * Raiders
 * Enclave
 * Wastelanders
 * Grandma Sparkle
 * Cherry
 * Arkansas
 * Red
 * Susan Lancaster
 * Mel
 * Pappy
 * Tammy Hargrave
 * Shorty
 * Hunter
 * Scavenger
 * Paulie Cantelli
 * Diego
 * Angela Staley
 * Brock
 * Kimba
 * Snowflake
 * Sam Warrick
 * Lug-Nut
 * Flash
 * Megaton Settler

Bugs

 * Do NOT mesmerize Angela Staley and put the slave collar on her and send her to Paradise Falls for the game will freeze at the loading screen every time you attempt to fast travel to any location(Xbox 360)