I LOVE the wine kits! If she's willing to experiment with different ones, that's great.
There are many different price ranges, and in this case, you get what you pay for. I've seen the Winexpert kits as low as $52 or so on sale. I've made quite a few of them, and the wine is ok. Kind of like a $5-$7 bottle, if I had to compare. The thing is, these kits are 4 week kits, so they're quick. They taste as good as they are going to get in about 4 months, and last a year or two without losing quality.
The most expensive kits I've seen are in the $150 range. Those not only have way more juice in them, they include crushed grape skins for the ferment, and usually oak spirals instead of sawdust, for the oaking. These kits are best after at least a year or two, and make a really nice bottle of wine, probably comparable to a $30 bottle. I've made a terriffic tannat/merlot blend with a "crushendo" kit that is going to be great in another year.
There are kits in the middle, too, and those have all been ok as well. The kits all make 6 gallons of wine, which is around 30 bottles.
There are even "Island Mist" kits, which are low ABV wine cooler type kits.
Maybe you can borrow or rent a floor corker from a friend or a LHBS, until you know if this hobby will last. Hand corking is a huge PITA for more than a couple of bottles.
Wine kits are fun, and produce nice table wines.