I tried it last year but wasn't happy with it for the cost. I'm sure it is worth it if you work it properly, but I just didn't have the time to devote to it.
Popshops is ok, they have different tiers of service, including custom text feeds which is not javascript. It's another tool I've worked with but wasn't too impressed, yet didn't devote much time to it either. I know people who use it successfully.