Low offer on high days on market listings?

[Jorge Gordon]

I see a lot of listings that have been on-market for 90, 100, or more days. Some of these need some work or updating. Another percent of these are inherited, or bought many years ago and I assume there's a lot of equity there. 

Does anyone else pursue these? If so, how do you handle them? My offers are going to be a fraction of list due to the scope of work, profit, etc. Is it advantageous to ask the listing agent to dual agent so that he/she still gets close to the commission they'd have received if it sold at list?