The lease entry fee for an HD DVR is free for the first, $99 for the 2nd, $199 for each after that. The lease fee savings is $12/mo ($17 vs $5), so worst case your $144 savings the first year only leaves it at a $55 premium per receiver for receiver 3+, but you come out way ahead on receiver 2. (both services have free 1st receiver lease, so it's a wash)
This is further offset by the massive discounting on the service that makes it easy to splurge. I was going to wait until after the E*15 launch to see what Dish was going to do with HD RSNs (if anything), but the discounts right now are huge:
Credits
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$24/mo (months 1-12) New sub credit (months 13-24 = $14/mo)
$5/mo (months 1-12) Credit for submitting rebate online
$10/mo (life?) HD free for Life credit
$10/mo (months 1-10) Refer-a-friend credit
$5/mo (life?) First receiver lease credit
Charges
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$63.99 Choice Xtra
$10 HD Access
$10 Receiver lease fees (2 x HR24 DVRs)
$7 DVR fee
$3 MRV fee
$4.99 HD Extra pack (really like Palladia)
So for almost the whole first year my $98.98 bill is offset by $54 in credits. In year 2 that goes to $29/mo in credits, then $15/mo in credits perpetually after that. So $44.98, $69.98, $83.98 respective bills.
With Dish I was on AT250 with HD & Platinum (which became just Platinum with HD Free for Life) and a single 722. So my costs were:
$64.99 AT250
$10 HD Platinum (really like Palladia)
$6 DVR Fee
So I'm leaving an $80.99 bill for a bill that will be $83.98 in a couple years. (or comparable after they both do their lock-step price increases) For the next 24 months, however, the savings almost make me question D*'s business model.