What are you putting in it? Costco sells these for about $12: http://www.amazon.com/Pop-Up-Organizer-Smart-Works-Black/dp/B00AZMUMC4

I have one in each of my smaller vehicles and they work great. Bonus points if you organize smaller stuff into plastic totes and put them in it. For my truck I don't really have a spot for one, but I use the storage under my front seats and the back seats flip up with more storage, and then I installed an Undercover Swingcase in the bed (which has a topper on it) for the winch tools, tie down straps, etc.