Off topic, but use sauna tubes and pressure treated 4x4's, it'll last longer then your rental agreement, guaranteed.

This may get cancelled all together. Was doing the math last night. The dimensions of this storage would or will be 10' x 15'. With 4 inches of depth on the foundation. With that it would take me roughly about 75 - 80 bags of concrete just to lay the foundation. ANd since it is so much, I would have to have it delivered. This alone is over $320. So either I am going to have to find a way to get bags of concrete cheaper, cut down on how much concrete I have to use by using other raw materiels mixed with it, abandon the project, or not use a concrete foundation (which is hard to do since I want it very stable and not get rotten).

So when an auction is sold, anything above what is owed to the storage facility goes to the tenant in default? I'm new to all this is why I ask.

This is exactly what I plan on doing. I'm a web designer, and I figure, why sell to someone only once, when you can give them the url to your site on a business card, and tell them to check out the site each week, or however often you update it. You can even capture people's email address and send out a weekly mailing of "specials". It's virtually an online storefront, no brick and mortar involved. If you have an inventory you replenish often, people will continue to come back to see what deals you have.

My friend's make their living soley on yard sales here in Florida around the Punta Gorda area. He has owned 2 antique shops in the the last 20 years, and has an eye for it. She said he was complaining that their ebay listing fees last month was around $1500, but she had to remind him that they did over $20K in sales in just 2 months, just on ebay! They only buy at yard sales, and only sell on ebay. They currently have 4100 items listed on ebay. I'm having my first garage sale this weekend from 2 units we purchased on CL, a 15x20 and a 10x15 for $500. The way it all went down is crazy, I learned ALOT from my first buy, what I WON'T do next time. Someone else's definition of "nice furniture" might not the be same as mine. After kicking myself in the @ss thinking I made a mistake, I learned after weeding through the JUNK, I should double my money, between CL and garage sales. I have a 2 bay big garage, and a storage shed out back. I'm putting tables all along the ouside walls with 3 shelves high above them. The first wall already looks like a thrift store, easily $300 in collectibles just on what I've unpacked so far.
I won't go on about all the other stuff, that's for another category.