Is it one of the lime green originals? Make sure, because ebonite has, from time to time, made balls for some big sporting goods chains, re-using names from the old days without using the same technology.
An example is with a chain called Sports Authority. They are selling a Crush/R and a Nitro, but these are just cheap pancake cores in cheap coverstocks using the names from the past, they are NOTHING like the originals.
When buying from a large chain store, remember that bowling isn't like other things. The balls you buy there are usually just cheap pieces of crap.
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Beware the JUGGERNAUT!
"The difference between stupidity and genius is that genius has its limits."
Albert Einstein