The Cream cheese will cost about 60 Baht/125 grams. The imitation crab will cost about 50 Baht/140 grams. (When I buy fresh crab, I will price this once I pick 140 grams.) Figure 6 servings (3 each 6 people for appetizers), this is about 54 cents per serving.
Inspired by Spend With Pennies and the link to this recipe is here.