Since you are only a newbie account you should consider using an escrow for the funds up until the laptop will be send from you.
Otherwise I dont think that anyone will send you btc since you can take it and run

If you can buy any lottery ticket in escrow let me know, then i do the same. Normally you buy a ticket and wait till the draw.
Newbie account or not, i juts thought this will be a nice way to sell the laptop and 1 person can win it for a very low amount.
If dont want to gamble or risk thats fine but then you can never win either.