Hi Steven,
Thank you for reaching out to us! The 510 Ego Mega Dual Coil Cartomizer is still being produced, and we have more on the way. The manufacturer has limited the runs on the EMDCC's, which is why they take longer for us to acquire and why they show as out of stock for longer periods than they used to. As a response, we have been ordering them in larger quantities in an effort to keep them stocked for as long as possible, but they are very popular items, and many people buy them in bulk. Since you are on the waiting list, we will email you as soon as the EMDCC is back in stock.
Best regards,
Brad