I think there is value in being a member, I do however think that 1% is too much, so it may not be 'worth it'! However you may never know until you actually need them! I think around $400-500 per anum is a more realistic figure and they just might end up with a bigger following...
In my experience they have been helpful when needed. I do have a concern that our industrial officer moved on and the replacement has not been seen, nor bothered to make contact in around 8 months!