Who says you can't save the planet and be stylish?

Last month, the city of San Francisco banned the use of nonbiodegradable plastic grocery bags, and other metropolitan areas are considering similar proposals. Just in time, designers Hermes and Stella McCartney have gotten into the reusable grocery-tote business, created for shoppers who need to show off their haute couture while they dash out for Romaine and instant oatmeal. The Hermes version will hit U.S. stores this summer. Made of "hand-wrought" silk, it carries a price tag of $960 (roughly equal to the amount I spend on groceries over the course of six months). McCartney's offering is a bargain, at just $495 for organic canvas.

A fan of committing to help the environment without the highway robbery? For 60 bucks, you can get a FEED Bag, the proceeds from which provide enough nourishment for one child for an entire school year (where, exactly, do the profits for the Hermes and McCartney bags wind up?). Endorsed by first niece Lauren Bush, the FEED Bag craze seems to be sweeping the nation; there's a four-to-six week wait for the canvas tote on Amazon.com (NASDAQ: AMZN).

For the bargain price of $1.99 each, you can pick up a reusable canvas tote or two at Trader Joe's. Next time I'm at my favorite natural-foods chain, I must remember to do so. I already have a great one, five years old and solid as ever, from The Strand. And it didn't even cost me a week's paycheck.

Beth Gaston Moon is an analyst at Schaeffer's Investment Research.

This post is part of our Battle of the Brands feature. Let us know which brand you prefer, and watch out for more Battle of the Brands posts.

There exists, somewhere between the fearsome mass-ness of the mainstream grocery store and the high-pitched good works of the coop, farmer's market, or CSA, a world in which low prices are valued slightly higher than locality of the source but, more than anything, the products must be good. Fair-trade, organic, without trans-fatty acids, with fewer artificial colorings or preservatives or Disney characters than all the other products.

It's the world of the natural foods market. A world dominated by two very dissimilar and yet, from a target market perspective, nearly identical competitors: Whole Foods Market, Inc. (NASDAQ: WFMI) and Trader Joe's, a unit of German private company Aldi Group.

Walking into a store -- or simply gazing at one from across the street -- you have a very different picture. On one corner, in the midst of a posh shopping area or trendy boutique-spattered neighborhood, Whole Foods, with its glistening crates of fresh produce, honeydew melons, purple potatoes, and blood oranges piled high in an abundance of exoticism. The doors open smoothly, the merchandise is displayed beautifully, and a high-ceilinged eating area is often overflowing with customers enjoying their deli purchases. Customers enter slowly, looking around as if discovering a stunning architectural landmark for the first time.

Grocery stores are no strangers to leveraged buyouts. Back in the roaring 1980s, they were a juicy target for private equity firms.

Well, according to a piece in the Wall Street Journal, we may see a comeback in activity in the sector. The paper says that Kroger (NYSE: KR) is a buyout target.

I can see why. In light of the competition – such as from Wal-Mart Stores, Inc.(NYSE: WMT) – there is lots of pressure on traditional grocery stores to make changes. Also, valuations are reasonable.

Kroger certainly has a big footprint. There are 2,468 stores in 31 states (with more than two dozen brands such as Ralph's and Fred Meyer). The company is either ranked #1 or #2 in 38 of its 44 biggest markets.

Lately, Kroger's stock price has been rallying and sports a market cap of $20 billion. If you throw in the long term debt, the company has an enterprise value of $27 billion. That means the company is selling at about 8X EBITDA, which is at a level where a deal can get done.

Who are the buyers? None were mentioned. Although, it looks like Goldman Sachs (NYSE: GS) is the financial advisor for Kroger.

Tom Taulli is the author of various books, including the Complete M&A Handbook and the EDGAR-Online Guide to Decoding Financial Statements.

Kohlberg Kravis Roberts seems to be popping up everywhere lately. On the heels of the group's $44 billion dollar offer for TXU, KKR is now expressing interest [subscription required] in J Sainsbury, Great Britain's third largest supermarket chain. The firms are attracted by the stable cash flows and frequently large property holdings that these companies offer. Here is a list of some of the top American grocery chains. Which of these, if any, do you think will be interesting to private equity firms?

Safeway Inc. (NYSE:SWY): Operates roughly 1,775 stores in California, Oregon, Washington, Alaska, Colorado, Arizona, Texas, the Chicago metropolitan area and the Mid-Atlantic region. The company boasts a solid return on equity and a P/E of 21.

Kroger Co. (NYSE:KR): This company fought off a KKR-led buyout attempt in 1988 with a $40 per share dividend. Is it the 1980s again? Will KKR return with a vengeance? This could be the stuff movies are made of!

SuperValu Inc. (NYSE:SVU): Will this look like a super value to a private equity firm? The company has a heavier debt load and a lower return on equity than Safeway and Kroger, but perhaps someone will see an opportunity for improvement.

Grocery stores are a boring business to most investors. It is exactly that predictability that may make them attractive buyout candidates.

Whole Foods Market, Inc. (NASDAQ:WFMI) was reinstated as outperform on 11-10-06. This stock is very attractive to me based on the things I've read about it. If the analyst's assertions are true, and WFMI's stock lost value based on a simple change in management focus from business operations to maintaining share price, then what should be happening in timely fashion will be a moderated climb back up to WFMI's fair market value. Salim Haji, an excellent writer over at The Motley Fool, offers the opinion that this stock has an intrinsic value in the $50 to $60 range.

With additional consideration of the fact that WFMI is undertaking a strategic stock buy back program, if I was looking for some fun places to play with some funds, this would be one of them. It is my opinion that this stock deserves some close attention right now. I think it is headed back up. One other thing I take into consideration about this situation is the possibility that Wal-Mart is going to fall flat on its corporate face with its "organic" food roll out. If that happens, (and I think it will), then Whole Foods Market will add even a bit more sparkle to my eye!

You can learn more about organic foods at About Organics.