Wine from scratch - that sounds like what I would want to try. Is it difficult to get good quality grapes shipped outside of California/Oregon/Washington? I don't really want to buy a literal ton haha!
It's not difficult for me to get good quality from CA, OR or WA shipped. There are places in NJ, Southeast PA, and Northern VA, all within driving distance of my home in Central PA. Fred's right - depending on where you live, you could be in the same boat.
The most prevalent are grapes from Lodi. But, you'll see grapes for sale from the Suisun Valley and Napa in CA, and areas in other states where there are good quality grapes. Granted, you'll pay a premium for higher end grapes. Lodi red grapes run in the $40's/lug; while higher quality will cost you anywhere from $60 to $90/lug (lugs are typically 32 lbs each).
The buckets of must are a little different - they tell you more precisely about where they're from, sometimes down to the vineyard; and, I think they hit the top end of the quality scale. Check out winegrapesdirect.com for some examples.
My advice - If you're going to go down the road of "wine from scratch," educate yourself about the process. Download the winemaking guides, ask questions on the forum and put together a solid winemaking plan based on the wine you are going to make. You should have all of your supplies (yeast, tannin, enzymes, oak, MLB, nutrients... everything) on hand before you bring your grapes home.