Like other stamps, a self-inking stamp uses a rubber stamp pad. It does, though, have an ink pad that is integrated into the stamp's base. When not in use, the stamp pad lies on the ink and rotates as you press the stamp down into the paper. Although the ink in these stamps lasts a long time, it will finally run out.  

The ink in a self-inking stamp can be refilled, and the ink pad can be changed when the ink runs out, so it is not water-resistant.  

The cost of self-inking stamps or rubber stamps is determined largely by the lead time used to manufacture the stamp, the number of ink colors to be used in the stamp, and the complexity of your stamp artwork. Typically, those stamps featuring a company logo would need a professional rubber stamp artist to translate the logo from CYMK to black and white to make the best artwork for the company stamp.  

The cost is usually cheaper if you can wait for a longer period of time (from one day to three days) to receive the company stamp. If you need the company stamp quickly, the rubber stamp manufacturer can charge an express fee of $19 to $40 in addition to the rubber stamp rate. Since the manufacturing quality is lower, a rubber stamp would be less expensive than a self-inking stamp. If the lead time is 1 to 3 working days but you need a company stamp right away, whether self-inking or rubber stamp, a self-inking stamp would be less expensive. This is due to the equipment used to create a self-inking stamp, which enables most self inking stamp singapore manufacturers can make it in under an hour.