How Many Times Can an E-cigarette Cartridge Be Refilled with E-liquid?

This was a question asked by one of the readers of e-cigarettepedia. If I have to give a direct answer: many times, depending on how you take care of your cartridges. I bought my first e-cigarette four months ago, and I’m still using 5 of the original 10 cartridges that came with my Super Mini E-cigarette (RN4981) Kit.
When Do You Know that Your E-cigarette Cartridge Needs to Be Replaced
Most e-cigarette cartridges are reusable. You need to purchase e-liquid separately to refill. But the outside shell of a cartridge, the mouthpiece, is made of plastic, and after time the heat from the atomizer deforms its shape until the shell gets cracked. Once the plastic cartridge is cracked, get rid of it or you risk swallowing e-liquid. Besides a damaged cartridges produce less smoke.
The other main part, the piece of polyester batting that holds the e-liquid inside the cartridge, accumulates residue of e-liquid. So, keep an eye on the color of the polyester core. When the core gets darker, you should change the cartridge.
Clean Cartridges in Hot Water
The best way to clean your cartridges is soaking them in hot water. Don’t boil them—they’ll turn pale and start melting. A couple of minutes in hot water is enough, and make sure the polyester batting is completely clean.
I have the Prado Platinum e-cig and was wondering where and what type of cartridge and atomizer can be purchased for replacement and if they even need to be replaced. That company is a rip-off and I prefer to find another supplier. Thanks