Nothing to rip really. The demand of airsofts often outstrips the supply in Canada. As such, people can hold out for more and usually get it, worth it or not for their used items. If we lived in HK or even USA, its a different story.
I will add, I've purchased several things used now, and they've all needed attention shortly after purchase. Airsoft guns have a definate lifespan. If your not technically capable of restoring your purchase, I would definately advise against a used purchase, especially considering your point.