Important information : If you want your cards to have length indicators(HIGHLY recommend) each different card is $50 to make and you will have 1000 pieces. Our factory will hold all cards until you've used them entirely. Once you need to restock the 1000 pieces, you will be required to pay $50 again. (ex: a single tray with all 12mm on each row the indicators will READ 12 on the side of the card so you will be able to identify your lengths once removed from packaging , A 12mm-18mm mixed tray is a different card it will READ 12mm ,13mm and so forth for the various lengths on that card which would be $50 for 1000pcs , a 14mm single tray would be a different card which would cost $50 for 1000pcs and so forth.
*Each different card you purchase has 1000 copies )
so the upfront cost is an investment you won't have to rebuy the same length cards for a while.
If you don't want your cards to indicate the lengths on the strips they can come standard like the example shown below . just counting how many lines there are in the lash tray 1-16 .