I'm interested in buying a Nexus 5. I want a prepaid phone. Koodo charges $450 for a prepaid Nexus 5, but only $350 for it with a Zero Tab. Would it make sense for me to get the Zero Tab version, then cancel it and get a Koodo SIM for $10, or is there a catch to buying the Tab version that I don't see? $360 is a more attractive price than $450, so I'd prefer that if there aren't hidden fees.