Gelson's markets carry it closer to Passover in their fresh deli. It's a little on the sweet side but my kids love it. They also carry a very good full Passover menu. They will start taking orders this year on April 4th. http://www.gelsons.com/shop/SD/simply...
I use Ungars brand which I get at Albertsons. It is a frozen load. They have sweetened and unsweetened. We get the unsweetened and add carrots, onions and a touch of sugar. I sure do miss the real homemade mom used to make though.
It's never too late to learn how to make it :). The recipe I have, and use, has been passed down through many generations. My children will pass it on. If not, friends purchase it at Nate 'n Al's and it's delicious.
Whille I shop at Gelson's all of the time, I am not a fan of their Jewish Holiday foods including the gefilte fish and matzoh balls with chicken soup. My suggestion is Katella Deli. They make pretty good everything.