The short version is: basic shop is free, yes free! You can list up to 25 items with no listing fees and no final value fees.
Sign up here: http://www.zibbet.com/NiftyKnits/sell
Or (like me) you can splash out $7 per month and pay no other fees EVER, listing as much as you want. There are gazillions of features, I've barely scratched the surface so far. Here's my spanking new shop http://www.zibbet.com/NiftyKnits
There is also a way to get a FREE premium account...
Free? I want free!... Zibbet operate a referral program. For each Premium seller you recruit, they will dock $1 from your monthly fee. so as it's $7 right now, that's just 7 sellers to recruit!
Sign up here: http://www.zibbet.com/NiftyKnits/sell and quote PREMIUMDISCOUNT to get your $7 deal (it's going up to $8 after 10a.m. Wednesday)