Hi Shelly in Saskatoon~
I can tell you that for me, it is certainly worth it. My store generates anywhere from about 50-75% of my sales each month.
The thing I like most about it (aside from all those $$$!) is being able to let things sit there until they sell. I make artistic creations for the home and garden, and some are expensive, and others are unusual and need the right person to come along-- the store is perfect for that. I can let something sit for three, four or more months, and it does not cost much. Sooner or later, someone will come along and buy.
I think the search features are under review-- and I think you will need to continue with regular auctions, and feature your store in those to get people to visit. Good luck! Tim~