I was able to get the serial number for the vehicle:

4154300558

I've been trying to translate this but the Canadian info isn't as easy to come by online as the US references! I've asked the owner for a photo of the actual cowl tag so hopefully that will reveal a little more info. I've also asked for a few more photos showing bed condition, better interior condition, etc.

Does $5000 seem reasonable for a vehicle in this condition?