It's like... if you want to save every variety of the Sacagawea
dollar coin, you pull one from circulation, and you're done. If you
want to save every variety of the Presidential dollar coins, you'll
have five new ones you'll have to pull every year.
Also, if the dollar coins is to be circulated concurrently with the
dollar bill, it seems like maybe the US Mint could encourage
circulation by selling the dollar coins for less than their face
value. ie. buy a $25.00 roll for $23.95 or something. The dollar
coins are supposed to be saving the US Mint money, so why not, in the
short term, pass those savings on to encourage spending? Once the
coin has become accepted, the prices can be increased, again.
There are 4 presidents per year, not 5.
You can buy them for less than face value. The Direct Ship program
sells boxes of $250 (10 rolls) for $250 and there is ZERO shipping
fee. You can pay with a credit card that gives you cash back or
airline miles and *poof* they are less than face value.