Living in an apartment -- single kits are probably the best way to go, for manageability.
Folks have recommended Coloma fruit juices. The price for 1.5 gallons of CS juice is $90 USD -- personally, it makes more sense to buy a FWK. I see there CS is out of stock, but Merlot is in stock at about the same price, and the kit includes all consumables. YMMV
I'm in a situation where I can't always get what I want. I'm part of a local group that makes a bulk purchase (10,000+ lbs) to get the best price, and we get a single shipment from the west coast that is focused around when CS and Merlot are available. Other grapes ripe at that time are also available, but nothing is guaranteed until the week before the shipment. So I'm used to making last minute decisions regarding what I get, and shifting gears quickly. Again, YMMV.