They're worth every penny. Great trucks to learn on, and still good enough for an expert to enjoy. You won't regret it. Just remember, all trucks do break, and will need repair at one point or another. That doesn't mean they're junk. Some people give traxxas a bad rap because they're marketed toward novice/entry level hobbyists. These people will disregard proper break-in, strip screws in haste, not install parts correctly, or want to upgrade every part in sight thinking it will become immune to broken parts. So many people get caught up in the hype they read online. Some will trash a t-maxx based on 10 minutes behind the wheel, or what they seen at the track. Don't have this mindset, stick with as many stock parts as you can unless you are hindered by stock performance (bulkheads/ towers/ servos/ etc...). Stock parts are cheap, and the new grey traxxas parts are pretty durable for the money. Take good care of it, and it'll take good care of you.
Good luck with your decision.