x2 on the Craigslist idea. But, guys usually want a premium for Snap-On boxes . . . . .
I own, or have owned, several Snap-On tool boxes over the years, after "upgrading" from Craftsman tool boxes in the 70's and 80's. It seemed that the only reliable way to store heavy tools was with "top cabin" USA made stuff. My needs expanded at the time that Sears decided to start "cheaping out" their tool box line, abandoning long time supplier Waterloo Tool Boxes. So, at the time, Snap-On seemed the only choice, and they have served me well.
BUT, recently I developed a need for "off site" tool storage. Many of the guys in the shop where I "part-time", have Harbor Freight tool boxes. And although I initially discounted them, they turned out to be serviceable units, and they are very affordable, something that has become important to me in "retirement". One of the other guys in the shop had a HF large rolling cabinet that he was very happy with, and as he pointed out, it was much more affordable than the same size in Snap-On. The local Snap-On dealer's price for a similar size was $2500, with a 10% discount, which seemed really expensive to retired me. So when push came to shove, I ended up purchasing Harbor Freight's, US General, 44 in wide, 13 drawer, rolling tool cabinet, normally $399. Yeah $399. But with a coupon from a mail flyer, I got mine for $359!! Just on purchase price, that's an $1891 savings. I just could not justify spending the extra dough . . . . . .
https://www.harborfreight.com/tool-storage/tool-chests-roller-cabinets/44-in-13-drawer-glossy-red-industrial-roller-cabinet-69387.htmlI am happy with it, the quality is adequate, and it is serving me well. I have it loaded to the max, and all the drawers are functioning fine. One thing I do not do is to roll it around the shop with it as loaded as I have it. Other than that though, I figured I got way above my money's worth, which as I said was the big issue for me.
They have a variety of sizes of rolling tool cabinets: a 56 inch, 11 drawer @ $749; and a 72 inch, 18 drawer @ $1099 possible sale prices unknown. The lower price may let you get a larger unit. My experience is that every gear head "outgrows" their tool box . . . . . . .
Others might make a different choice.
Just my 2¢
Fordboy