Hi Jonathan,
I regularly attend the open days. and find them very worthwhile. There is a lot of second hand and ex demo stock available as well as deals on new equipment.
There is usually a good selection of second hand tooling to be had as well.
Get there early otherwise all the regulars will beat you to the front of the queue
.
They publish a list of the second hand/ex demo stock available on their website, usually not until the day before the sale so look out for that.