I'm not entirely sure I understand the appeal of making a chilli using packets or jars, making a chilli is so simple and has none of the artificial rubbish you will find in the prepared stuff.
Having looked on the web at the various potions available you still need to chop an onion and some garlic, add the mince. Then it is a toss up whether adding a couple of teaspoons of spices, a tin of toms, kidney beans and some beef stock is really that different to using the expensive packet stuff. A chilli takes around 20minutes to prepare from scratch and then a good while simmering.
Making from scratch really is the best answer, health and cost wise. Leftovers can be frozen for another day.