All the previous posts are correct. A point of interest on cores however is that the total sale including the core is charged and also taxed.
Example,
Corvette stainless caliper................ $75.00
Core charge on caliper..................... 50.00
Total.......................................... 125.00
Tax, Michigan is 6%.......................... 7.50
Final total.................................. $132.50
Now heres the kicker to this example. When you return the core, they keep the sales tax, it`s not refunded to you. I had noticed on a previous thread that the customer was "hot" over the none refundable sales tax on the core which would have been $3.00. We get many complaints over cores, but sorry it`s the Law.
And then they most often will tell you it`s not rebuildable and even keep the core charge too. These places make money off the cores and its nearly clear profit as they buy scrap yard cores for about $3.00 a piece. Another trick to keep your money is to tell you your core is incorrect. Starters and alternators fall victim to this scam all the time.
Now you know there nasty little secrets on cores.:L