Is this only for only people who live in Canada and also what is the code that you used. I went to the westjet.com and for a mini van it wasn't 201 it was 5 hundred something.
Experiment with the pickup times. By taking the van Jan 6-12 noon - jan 13 12 noon, my cost was over 400. I put in a pick up time of just 30 minutes earlier, or drop off time 30 minutes later, and the price dropped to under 200, plus taxes! Take the car longer, pay less! On checking again for you, my rate actually went down by about 10$, so I rebooked it. I am a member of the enterprise rewards program as well, and that helped with the rate a little bit as well, but only a 5% difference.
Always experiment with the times for pick up, and drop off. If you return the car 30 minutes early, they dont seem to mind.