I remember when "i" names were quite hot, but I haven't seen too many sales lately. Your keyword is great and it is a great fit for the .BIZ extension ("advertising" "biz") but when you put it all together, the name isn't premium. iAdvertising.com would be quite valuable, and Advertising.biz would certainly be premium, but iAdvertising.biz...I don't think so, IMO.
But you could develop the name which would increase it's value a great deal.
In the retail (end user) market, you may be able to get ~$100 for it if you have the luxury of waiting around for the right buyer to come along. Otherwise, development could add much value.