I'm going to try making my own butter ghee, i.e. clarified butter. I assume that's a lot healthier. I can also make relatively small quantities. On the occasion I've bought tubs of butter ghee from shops, it's quite expensive and the smell goes off before I've used very much, so it's always ended up in the bin.
As for vegetable ghee, it can't be much different to solid margarines which claim to taste quite like butter, whilst not containing any health-threatening elements. Perhaps they're a better alternative. It's difficult to know what a lump of vegetable ghee brings to the party when added to most dishes at Az's restaurant.