Duration of Trainer Workout

[Pedal Wench]

I'm thinking of forking out for a Sufferfest video but think it might get expensive since I'll be bored staring at the same videos over and over again.

Best money you can spend if you want to stay motivated on the trainer. I've got three that I rotate (and about to get a 4th) and I'm not bored - in fact, I look forward to them because they're motivating.