I have a 10X8 metal shed from Arrow, it cost $200 in 2004, probably closer to $300 now, it comes in a large, flat box with a big instruction manual and a bag with 500+ screws. The instructions are long but well laid out, first you have to have some kind of flooring, a metal shed on grass is just a bad idea, I used cinder blocks and OSB plywood for the deck, put a large sheet of plastic under the OSB to act as a vapor barrier, it has to be level, not perfect but close. Next you built the sub-assemblies, there are several to do then your ready to assemble the shed, don't even THINK about doing this on a windy day, just don't. Assembly was straightforward but long, between the foundation and all the screwing it took 2 days to finish. You will need several tubes of calk, calking the screws and the joints will give you a decent shot of a non-leaking shed. A resin shed would probably a lot less complicated to assemble but they cost more than twice of a metal shed. You could go homemade and download some plans somewhere, you could go ultra-cheap and find pallets or other scrap lumber but you need the carpentry skills (I don't have the skills or the tools) and if using untreated wood paint it, sooner rather than later. If going the metal route get/borrow.buy a decent powered cordless screwdriver or drill, this is WAY to many screws to deal with by hand, lastly if you live in a humid climate (I live in FL) you need to tackle surface rust on a regular basis, a few cans of spray paint and sanding of your choice will keep it in decent condition, mine's 8yrs old and looks/works fine.