you need to be really careful before investing your bitcoins ... trust me market trends are deceptive ... if you are new to this sector then i guess you have done the best thing by being a member of this forum ... the more time passes after mining the coins the more expensive it becomes /...you need to get a good buyer who is willing to pay the highest price ... bitcoins are scarce .. so go for the highest bidder but check his stats fraud is not uncommon !! happy mining !!