Let's not kid ourselves, here. At $1.50-$2 the VDH is a much better value. Mama costs 4x that, plus shipping, and you don't get 4x the product. But VDH being better? I don't know about that one.
I can see how it would be boring. I like the scent, and I don't flit from soap to soap to soap, but even I want a change, or some cool scent, every now and again.
How's this for an analogy: a Miata is a great value and a solid performer, but it ain't no Lotus Elise. And the price reflects that. Of course, if your driving skills are not up to the Elise, it might not seem that way.
Kid ourselves, look at it again. The container is resealable and reuseable, secondly your missing your travel expenses to buy your VDH from your equation. You are telling me that your get in your car, drive to the store, buy the VDH, drive home for less than $2? The going government charge per mile is $0.55, so if the store is 2 miles away, that is $2.20 for the round trip. Now add in that you must provide a container, that you paid for somewhere in the past to put the VDH in? Let me guess you got that free....oh and your time is free, who is kidding who?
Looking at comparisons with a bias, doesn't equate to honest results.