Dad and I ordered a pulley puller from 3800performance (35+100 dollar core). We made sure the puller was very clean and in great condition before we sent it back. Father sent it via usps, a week later after no refund of the core we emailed them asking them when we would get the core charge back. They insisted that they didn't get the package. (always put a tracking number on everything!) We didn't because they seemed like a good site. My father did a missing package report through usps and the said the package went through. Basically, 3800performance seen no taking number and just took it and won't give us the 100 dollar core charge back... We tried to reason with them... Unlucky for them, they dont know how stubborn my father is. Better Business Bureau is being called tuesday. Would not recommend doing any business with this site!