Justin K.
Yelp
Great for fruits, veggies, and live plants. As for crafts, you'd do better in Portland.
I moved to Salem from Berkeley, California (Boo, hiss, I know... I'm not supposed to admit my California transplant status.) Anyway, I was really glad to see Salem supported a relatively vibrant farmer's market -- especially for a city of this size.
If you looking for fresh food, then this should be your go-to place. For a bit less than Safeway, you can find fresh, high quality greens, fruits, and veggies. Of course there's the eco-smugness that comes along with knowing your kale grew just a few miles up the road (requiring little carbon to get it to market), but the thing that I love most is the crisp, fresh produce. Roth's and Safeway make a good faith effort at fresh, but they can't hold a candle to the produce we get from the market. I find that Martinez Family Farms always has the best produce at the best prices.
You can buy fresh eggs here, as well as organic meats of various kinds. We've never purchased these, however, as they're much more expensive than the supermarket varieties. My foodie friends, however, swear by the local lamb stand.
Saturday market is also a fantastic place to find your green plants. The young tomato, tomatillo, pepper, lettuce, and squash plants we found at Saturday market were healthier (and cheaper) than the Home Depot/Lowes starter plants. (A Home Depot pepper plant spread its nasty blight throughout my garden, but that's the subject of another review.) As for live plants, I recommend Minto Island Growers.
Saturday market also has its share of live music (not always so great), food cart vendors (tasty, but nothing out of the ordinary), and craftspeople. If you're looking to buy arts and crafts, perhaps the Portland market would serve you better. Maybe it's that I'm just not a crafts person, but I don't often see crafts I'd actually want to purchase at Saturday Market.
I'll close with a few practical tips. The market is best early in the day (around 8:30 or 9:00, especially if you don't like crowds.) But real deal hunters might prefer the time just before closing. I know some of the bakeries put their goods on special at the end of the day.
Also, bring cash. It's possible to use a credit card here, but only if you're willing to jump through several hoops. If you wish to charge your purchase you have to pick out your merchandise, have the clerk ring up your total, walk across the market to the administration booth, have them charge the total, and then walk back to the original booth to get your goods. While I applaud the Saturday market for attempting to become plastic friendly, I just prefer the convenience of cash.
Finally, bring your own reusable bags. Some of the merchants provide plastic disposable bags, but many do not. Employing your own reusable bags will keep the merchants and the planet happier -- while making your veggie filled trip home a lot easier.