If you are trying to reduce your spend on health and beauty items, you can simply start with the kind of soap you buy.
When comparing soap within the same brand, bar soap is usually more cost effective than body wash. Bar soap is usually sold at a lower price point and will last longer. It is also better for the environment as bar soap has less packaging to produce trash versus the collecting bottles of body wash.
If you still prefer body wash, always choose generic or cheaper brands like Suave. They are made with a comparable level of quality as the national brands. When you spend extra money for something as simple as body wash, you are just paying extra for branding and marketing - which isn’t worth it!
The only exception is when you are willing to spend more because of a specific value some companies share with you. For example, I tend to lean toward Dove products because I love their “Campaign for Real Women.” Or, if you happen to be a “Green Queen” you may support Aveda products for their sustainability practices.
Otherwise, my choice is to $ave on bar soap. Choose the important things you like to splurge on and save on all the other things. For me, soap isn’t on the “splurge” list.