Question to zennoposter users

I decided to buy ZP4, but saw on forums that there is a 5th version already in beta. Do any of you old ZP users remember if there were some discounts when ZP4 got released?
I just don't want to buy it now then find out 2 weeks later a discount for new release or something .

They had a discount a couple of months ago, but its done now. They normally run one about once a year, so I dont see them having one very soon.