Worm bin is great. They may seem pricey ... Wait...holy crap! I see San Mateo is selling worm bins $92 and composters for $116 or so.
When I bought mine (I bought the limit of one each) they were discounted for residents to about $30 each.
Honestly, you can use a $15 rubbermaid bin.
Are they hard to keep alive? Nope, I ignore mine for weeks while we store up veggie scraps (in the freezer). My worms are descendants of my original pound of worms from 6 years ago. The bin used to be in the garage but fruit scraps tend to come with fruit flies so they are in front of the garage now. They have lived through all the heat waves and cold nights we've had.
I use a tie down strap around the bin to keep racoons out, but they don't seem to go after it even though it's full of yummy stuff, they seem to like going after grubs in the lawn instead. I hate racoons.
If you start a bin, give me a holler and I'll "frag" some for you...no point in you paying $20 for a pound of worms!
I check it every once in a while, aside from food of course, they consume bedding (newspaper) and of course needs some water and sand. (sand for grit, in fact un-salted aragonite is ideal as it keeps the bin from getting too acidic)
The worm poop is pure gardening gold. Add that to the GFO and carbon and anything you grow with it will make a nice tasty salad for Smiley1.
V