I make my own Moroaccan style preserved lemons for free... Here's a guideline:
Step1
Wash lemons, and scrub if necessary. Cut lemons in half, and slice 3/4 of the way through each half to form an "x." Fill lemons with salt. Pack lemons tightly into a clean jar.
Step2
Continue preserving lemons by sprinkling them with an additional tablespoon of salt. Add fennel seeds, peppercorns, coriander seeds, bay leaves, cinnamon stick, allspice berries and cloves.
Step3
Pour lemon juice and boiling water on top of preserved lemon mixture.
Step4
Fill the remainder of the container with olive oil.
Step5
Place preserved lemons in the refrigerator and allow to rest, untouched for 1 to 2 months.
Step6
Cook with preserved lemons by grating the rind into rice dishes, marinades, stews, soups and couscous as well as atop fish.