Although I have done a few "can you deliver" deals, it hasn't always gone well. In fact I just sold my iPhone, guy emails, offers $20 below, I say ok and let's meet, he says oooops no car can you deliver for full price, sure - it's a 10 min ride, from the time he emailed to sold took about 30 min. Another guy left me sitting at Timmies a couple days before that for the same phone and was offering less $.
A few years ago, guy wanted to buy my golf clubs, I called him just before leaving to make sure we were still on, 10 min later I ended up knocking on his door for 5 min before leaving. Called him back to get VM. I don't get this. Why bother emailing, haggling and setting up a meet only to not be there.
Delivery doesn't always work out but I find that you usually get a feeling if it will or not by talking to them on the phone. Also delivery isn't free - this isn't pizza pizza. Don't offer 60% of asking and expect delivery.
Some of the emails and offers are definitely out there but I will say that everyone that I've ever actually sold anything to on Kijiji seemed to be normal and reasonable.