It's so easy to make sugar-free ketchup, why would you want to spend so
much money to buy it.   Here's my favorite recipe:

I usually add less water than it calls for to make it thicker, try 1/2
the water ie: 6 oz and then add more if its too thick -- you may have to
adjust the vinegar, too.

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http://www.recipegal.com/lowcarb/ketchup.htm

12 oz. Tomato paste
12. oz water
1 tsp onion powder
1/2 cup white vinegar
5 Equal tablets
1 Tablespoon salt

Dissolve Equal tablets in water (I use tablets instead of packets
because they have 1/5 the grams). Combine all ingredients. Tastes a lot
like real Heinz to me. 54 grams in the entire recipe (using PP counts).
1 gram per tablespoon (about 1/4 regular Heinz).

For "almost like" my fabulous barbecue sauce, combine the above in
saucepan with 5 more Equal tablets, 2 tablespoons of Tabasco, 2
tablespoons Lea&Perrins Worcestershire, 1 large clove garlic, 1/4
teaspoon dry mustard and one stick (1/4 pound) butter. Warm over low
heat and serve at the table. You could also use this sauce on the grill,
but then you end up using a lot more and you can't measure how much
ended up on the coals. 62 grams in entire batch. About .9 grams per
tablespoon and well, well worth it.