Never ever ever pay or suggest payment for a DMOZ listing.
Doing so could cause your site and the network of sites it belongs to being banned from ever being listed in the directory.
The advice I can give you is ensure your site follows the listing guidelines for the category you apply for. Suggest a non promotional title and description and hit submit and then forget.
Seriously that is it. There is nothing more you can do.
Any site that states it can guarantee a listing in DMOZ is LYING.