Better customer satisfaction from sending them the right coral from your image and time from finding it faster. Also you will save lots of time having these by not having to write little signs yourself every time.
You will only get one of each number so you will not have any copies.
They do come in SETS of 100 and prices as low as $0.45 each
Turn around time is 1-3 days before shipping. Shipping is FREE to the lower 48 states also.