I dont understand your rating system....
Aquarium -Medium (cause its costly and you usually don't make a profit)
Candy Tree -Easy (can get choco costume)
Car Repair -Easy (some times it can be expensive)
Computer Repair -Hard (only do if you battle or for goals. You dont get mps from this. Only magic)
Desert Spy -Easy (if the item is in stock)
Farming-Easy (gives yarn some times)
Eleka Prison -Hard (see aqua. Minipet food is expensive. and Circus tickets are cheap)
Haunted House -Medium (you always get a crystal (or somethings 25k and stamp))
Knutt House -medium(see aqua)
Knutt Knight -medium (easy if you have all the cards and a highly stated pet)
Leprechaun -Medium
Puchalla Inn -Hard (the quest are usually really expensive and not worth it unless doing goals. 9/10 you wont make a profit)
Robots -Medium (see aqua)
Secret Santa -Hard (only do it if you need it for goals)
Santa Claws -Easy
Sewer Monster -Hard
Simerian Excavator -Medium (getting a slate is common)
Simerian Explorer -need map
Snowman -Hard (only do for goals.)
Sumo Sally -Need pass
Travis Truck -Medium