Is it 100% true that the site checkers kill your dumps??

yes. free checkers will kill your dumps. 50-70% chance

What about a 14 cent checker?

Use cardok or try2check

What are the url to these sites?

check pm

Most of dump selling shops and CC shops have online checkers...

Do they kill the dumps though?

Yes ofcourse https://txgate.io/images/smilies/smile.gif. Check manually, dont buy a lot of dumps at once, but a few so u have time to check and replace them, take the msr with you and the laptop, purchase dumps, check them on the go and if they dont work replace them. Hope that helps...

Thanks bro