No, that's pretty awful value. As with all "starter" kits for just about anything, it's money for old rope.
Demijohns can be found in second-hand shops (usually sourced from starter kits) or at car boot sales, or friends, relatives, neighbours, etc. for next to nothing. I don't use them any more, preferring food-grade one-gallon containers intended for commercial use or, if I'm making a larger quantity, food-grade buckets with lids. There are a million things you can ferment wine in.
Even so, you asked about storage - demijohns are perfectly suitable for bulk storage and, in fact, this is always preferable for the first year rather than putting your new wines straight into bottles. Don't buy bottles unless they're already full of wine - then save those. I wouldn't bother with corks and corking machines - very old hat - as you can buy push-in reusable stoppers. Better still, save screw-top bottles, as the top will last for years if used sensibly. Oh, and don't neglect the good old PET bottle wrapped around lemonade etc. - they're perfectly OK for wine storage for a couple of years despite any horror stories you may read.
So, what do you NEED?
Yeast - use proper wine yeast. General purpose wine yeast is perfectly OK for 99% of all household germs.
Right, that's the end of the "must-have" list.
You might also find the following handy (but not essential) ...
Campden tablets (or sodium metabisulphite) for sterilising, stabilising and maturation.
Recipes (Andy has a good book out, or look for Jack Keller's site on the net - bearing in mind that he's American). Whatever you do, use modern recipes as "traditional country wine" recipes tend to fail or taste like cough medicine.
A good fairy-story detector (common sense usually does the trick).
This site so that you can ask questions. There are a lot of wine makers on here. Strangely enough, I would avoid the dedicated wine making sites around the net, as there are some VERY bad habits on display there.
Best of luck (although you won't need it, because making wine is actually a doddle).
EDIT: Have a read of this ...
http://www.selfsufficientish.com/forum/ ... ear+out+of