...or buy 2 packs of 1 lace, like those you saw.... Since it seems that hard to find what you are looking for, i guess you will have to pay a little bit more than the average price...
these laces are not normally on sale , every store has a shoebox full of laces that have accumulated over the years, you have to go through the box and hopefully you find a pair. but a lot of times they only have one lace...lol
its crazy i never thought it was so complicated to find special laces