The market for certain collectibles like toy robots can fluctuate based on demand. Currently, there are two that are worth the most in mint condition: The Lost in Space B-9 Robot and the Mr. Atomic robot.
at ringside collectibles
The robot birds are in Giuseppe's Toys when you respond to the alarm and find the Toy Robot is the cause.
The toy birds are in Giuseppe's Toys when you go there to see what the alarm is. It is being caused by the toy robot, which you also take with you.
Slideshow collectibles cannot be found anywhere. However, sideshow collectibles are in abundance. Sideshow Toy sells a range of sideshow collectibles and are highly recommended for their supply.
Japan was the first to produce a true toy robot. It was a wind up toy that walked made of tin plate. It was only 15 cm tall.
Toy robot kits usually contain around 300 metal pieces that can be assembled to form a very basic robot toy. It is advised that you help your child assemble a robot as it can get very complicated.
Ebay has lots of them.
The robot birds are in Giuseppe's Toys when you respond to the alarm and find the Toy Robot is the cause.
Robosapien is a toy robot created by the company, Wowwee.
90 cents
The dinosoure and the robot are both good and you can get them cheap at Target.
It entirely depends on the collectible. How rare it is? What condition it's in? If it's a one of a kind or mass produced ? There isn't a price guide for Rugrats collectibles that I could find so your best bet is to go on ebay and see what the price ranges are for other sellers (if there are any), or perhaps go to a toy fair of find a collectibles expert in your area and ask them.