WELCOME!!! :beer You'll come to love this forum as I do! Lots of great people on here and it's actually a site where if you ask a question, you WILL get results. More than enough info and reading to keep you busy for a looooong time.
Next; that Snappy roll cart......and you'll get this a lot, 'IMO' it is still pricey @ $350. At $800 new it's REDICULOUS! Other than the fact that this cart has the lock n' roll drawer retaining system, it's still a major tool truck brand, but a typical run-of-the-mill styled roll cart.
If it's what you want, I always say get it. If it's in good shape, I guess you can consider it a deal. When I 1st started out, I had a Blue Point KRBC10T Series style cart, minus the side shelves and it wasn't too bad of a cart...it served it's purpose 100%. Now, I know you've probably looked, and you can find that style cart that you're looking at almost at any other tool storage supply chain/website/company for a little less and it'll be brand new. not that the S/O one is crappy at all. I think it maybe be the NEW price that I can't see past, even though this is used/
If it's convenient for you to get it, get it. If you wanna still keep looking around, do that too. I think I would be a little more pro for getting it if I were on a budget, had a 'entry level' sized tool collection and needed it for light duty use, esp. if you do not have a different, somewhat larger tool house.
Let us know!