The Slick Rick Black Market has a very slim chance to spawn every 5 minutes, each time the cycle turns from night to morning, in the Alien Biome. Players can purchase exclusive vaulted items like Dual Blades, Blacklisted Mutations & more.
In Steal An Egg, players can buy exclusive items, skins & even mutation shards from the Slick Rick Black Market. The problem is that nobody knows the spawn locations and respawn times. So, if you're wondering where the Slick Rick Trader spawns in the game, here is a detailed guide.
When does the Slick Rick Trader Spawn in Steal An Egg?

The first thing you should understand is that there is no fixed time or interval when you can find Slick Rick, as spawn times and spawn rates are completely random. Basically, every 30 minutes, there is a very slim chance for Slick Rick Trader to spawn during the Day. When he does, you will receive a server-wide notification saying, "Word on the Street is Slick Rick back in Alien Planet," similar to the image above. So, while you are playing, wait every 30 minutes for him to spawn in your server. He is also a global spawn, which means if he spawns, he will appear on every game server.
After spawning, he will stay for 5 minutes before leaving the following night. So, be sure to reroll and complete all your purchases before he disappears.
Where does Slick Rick Dealer Spawn in Steal An Egg?

Right now, the Slick Rick NPC only spawns in the Alien Biome or Planet. This is at the end of the map, next to the Alien Ferryman character. You can easily identify the trader by his large black truck & the shiny gold rims, with the large caption "Slick Rick Black Market" on top.
All Items in Slick Rick Black Market Shop
As mentioned earlier, the Slick Rick Black Market Shop usually sells any three items, such as the vaulted mutations, base skins & other shard objects. During my multiple runs, I found him selling the following set of items.
- Fractured Void Crystal
- Dual Blades
- Jungle Base Skin
- Coral Base Skin
- Blacklisted Mutation
If you don't like the items in his shop, you can always pay some Robux to reroll and get a new set of three items.

Another important thing to remember is the cost of the items. The cost of the items in the Slick Rick Shop depends on your entire base earn rate. If you have good pets and a high earn rate, the prices of your items in the Black Market will be higher; if they are lower, the prices will be lower. Everything depends on your earn rate, inventory items & types of pets in your base.
For more on Roblox, check out Break And Steal An Egg Mutations - Multipliers & How To Get or How to open the Alien Biome Door in Steal An Egg