You can make your own by buying fresh red & ripe roma or egg tomatoes (i think thats what they call it) & quarter them removing most of the seeds, & place in a fan forced oven on the lowest heat for at least 12 hours or until they become dry & the moisture is gone- if u like them semi-dried dont leave them as long.
Place in jars with good olive oil & season them with salt, pepper, oregano & garlic .