I personally think it is worth it if any of the following applies to you.....
>You have multiple satellite receivers (3 or more receivers)
>You have one or more DVR receivers
>You haved a SuperDish with two or more receivers
>You can afford $5.99 a month but cannot afford $40-$100 upfront for a service call plus $50-$100+ for a new receiver upfront
For someone with a Dish 300/500 and one receiver, you can probably save enough in a year or two to make up for what a part would have cost to replace.
For someone with a SuperDish or two or more receivers that want to stay with new receivers or have a DVR receiver the replacement cost could be great, especially since they are in short supply right now, in which may cause them to demand a premium for them.
Some could get a used receiver to save money on costs, in which would be cheaper than what the warranty would cost over a period of 2-3 years, especially considering that most will not have a claim. For those with DVR receivers (especially more than one) it is highly recommended to have one, although Dish does repair the receivers for a cost which may actually be cheaper than getting the warranty in the long run. Dish has also offered customers a 301 receiver to replace a receiver on their account for $49 or as an add on for $69 to existing subscribers.