I make my own baby food and my son is 7 months old. There's a great website you can check out.
It has great explanations on what foods you should feed your baby, as well as advice on why to hold off on certain foods. And it has a section on exotic fruits, which is great because I want to be introduce my son to a variety of different foods. There is also a section on meats, which I find helpful as I'd rather have fresh meat for my son rather than the ickiness in the jars I see on the shelves.
Also, the pureed foods we make ourselves can also be used in our own foods. I sometimes eat my son's butternut squash or sweet potato puree, unseasoned, and I love it!
Also are recommendations on why steaming is the best method, but baking can be used to. Baked apples and pears taste so yummy! They come out sweeter than simply boiling/steaming and pureeing them. Try it and see!
Most of the time it is more affordable, but if you just need a small amount of something (like prunes for constipation) it might be best to just buy a small jar. Also, fruits like apricots can be expensive and the jarred stuff is cheaper if you'd like to have your son eat those kinds of food.
There is also a recipe box available on Amazon called the Baby Bistro Box. It has healthy tips and recipes for babies, but it also includes a little bit of olive oil. Ask your pediatrician if that's ok for your baby. I have the Baby Bistro Box (it's under $30 and I won it online) so if you would like some recipes for your baby, please let me know and I'll email them to you!