Writing ads and posting on the Internet

For the company for the delivery of technical cargoes - oxygen, welding mixtures, argon, nitrogen, carbon dioxide, etc. - You need to write several options for ads and place them on the Internet - on bulletin boards and on forums of relevant topics.
Placement on bulletin boards with attendance from 1000 visitors per day.
Payment upon placement after a list of sites where ads have been placed is provided and checked for ads.
Do not offer the order separately.
In the responses, specify the cost of writing ads about 10 options, and the cost of placement, terms and number of sites.