If you like it, buy it. Everyone has a different taste and everyone has a different opinion about things. DVD is very affordable in general, considering its young age and limited market. Of course VHS is cheaper. DVD is an infant and needs to grow.
Strategies have to be created, markets have to be developed and technologies evaluated.
The first audio CDs retailed at horrendous prices compared to vinyl albums and yet people loved it and embraced it. The price is not the ultimate measure. It is content. And it is the content where no other medium can compete with DVD in the long run. Let s enjoy it for what it is.