The bundle is worth it for the Tier 1 story alone. It starts with THe Black Road and steadily builds up to Paranst Under Siege. I ran them all, in order, and my group and I had a great time.
In my expereince, most of the adventures run about 50% longer than their stated run-time. E.g. a 2-hour adventure runs more like 3-hours.
[5 of 5 Stars!]