It may sounds stupid...but I can't figure out how to sell the items that sims craft (like clean bot or hydro bot etc) in their shops....
Do I have to add them to catalog?? If it's so, how do I do that??
please help!!!

place the items where you want to display them in your shop, either on the floor or on shelves
go to the top right hand corner of your game and click on it to expand it. to set the price you will see a smilie type face and some yellow "sunray" style segments set out above it. each little segment has a different price type.

then using the tag icon click once on the items, they will turn yellow to indicate they are set for sale. if they are are displayed on shelves you can click on the shelf which will set all the items on it for sale.

click again on the tag once you are done and let your customers loose

At fast, thank you for your reply.
I followed your instruction, but when I point craft item, "cannot be set for sale" msg appear near pointer......
Is that because of one of the global hack that I installed???

if you suspect its a hack you have installed, make sure the game is not running, disable or remove the hack or hacks and try again without

If you are trying to set robots for sale, make sure they are turned off first.

For the bots, you have to click on the base unit and not the actual bot to set the item for sale. If you notice there are actually two parts to them, just like the receiver on the phone or the guitar and amplifier.