I went to this day two years ago as a dealer and posted a review. It is not huge convention but there is a full days worth of lectures and plenty of dealers turn up, I managed to see Andy Nyman there, I would recomend it for anyone within a reasonable drive, particularly if you have not been to a magic day before as it is a good intro to the whole thing.
Last year was good as well. Tommy Wonder was the headliner. There is also a review for that here too. Terry Seabrooke will be comparing again and frankly it's worth going just for that.