People selling cars and just don't care?

[TheSneakiness]

Just an observation I've made over the last couple of weeks.

I've been looking at unregistered cars going for cheap (< $1000) on Gumtree and Carsales to keep me occupied, get it going as a run around and to teach myself a few more things about cars.

My main source of query comes via email so with Gumtree that's OK unless that user is fairly inactive but with Carsales you need to enter in a phone number, so I use 0400 000 000 as a number with a query to ask if they have a list of things that need fixing on it to save a trip to the local RW certifier.

All of the cars I've enquired about I've received one response on Gumtree saying something along the lines of someone else is coming to see it, if they don't I'll contact you (spewing about that too cause it was a nice 2001 AUII XR8)

Is it that hard to respond to an email query? Do I need to change my attack?