Just doing a simple google search for that make and model, I see there are a few in that series that range in price from $350 to $650 new. So depending on what model of the L755 you have it would make a difference in the price you want to set to sell it. Now, keep in mind the age of laptop, how long you've had it, the ware and tare - use of it, you have to factor in the depreciation value of it, because what you paid for it then and what a customer can get with a brand new one is like night and day with hardware. Meaning, you buy a laptop today and 3 to 6 months the hardware will be outdated.
As for the software, if you don't want to keep it, I would sell the software separate rather as a bundle deal with the laptop. Just a matter of a selling point for the laptop. Personally I would keep the software because that's some high dollar software you've got there.
Question: Why are you wanting to sell the laptop and all that expensive software?