A better idea for collectors might be to collect the older coins that were not mass-marketed. But coins that are circulated and worn might only cost a dollar. In general, junk silver is being sold for about four times face value. You are not likely to find any rare coins in the junk silver box, but there could be enough of a variety to start a collection. If you still like the hobby six months later, you might want to invest some bigger money into it.
Coin collecting is like bowling and golf.
Too many people start out spending big money on balls and clubs only to abandon the hobby months later.