Jorbo's turf within Knowhere includes a casino named "The Lucky Star". That is where Chuck was instructed to bring the specimen encased in the special thermos - it was also where the crew of the Ronin was told to bring the researcher "Ashley"
The spaceport (just inside the mouth of the long dead Celestial head) will permit you to land (the fee is 10 credits a day, they also top off fuel, replenish energy cells, dump waste, etc. This extra service comes to another 50 credits. As with every spaceport, they are not responsible for lost, damaged or stolen property/ships.