The more numbers you play the more hits and the sooner they will arrive.
Playing several times a week.
In general Pick 3 requires at least 16/20 box numbers per draw for a system to have a chance.
Generally straight hits will require at least 7 to 10% straight numbers per draw.
The only way to hold cost down is to play less often. Otherwise, the daily cost and number of tickets stays the same.
Savings and long term profits come from holding back and waiting for the Best odds situations to appear.
If you only play once a year or every day, the cost and plays stay pretty constant to have a shot.