they arrive at 11.57 for the second hd-dvr because they have to collect tax on the 100.00 upgrade charge that is required for the second hd-dvr. only your first bill would have that tax. afterwards on your following bill you would not have such a high tax.
it looks like you are paying 9.3 percent on taxes for your equipment. even though they do not charge you directly on the bill for your first receivers monthly use, it is calculated into the equation. they rate the primary rec lease fee at 9.00. if you are out of commit and have a leased rec and subscribe to a non-qualifying package you would see this fee for your primary leased rec. keep in mind that in california you have to pay taxes on the value of the item even if your charge is waived.
example : single 612 you pay taxes on 13.00. they charge you directly 6.00 for the dvr, but waive the 9.00 first rec activation. 1.38/13= 9.3 percent
with two 211, they collect taxes on 16.00 (they charge you 7.00 and waive the 9.00 primary rec fee) 1.48/16= 9.3 percent
with one 612 and one 211, dish collects taxes on 22.00 (you pay 7.00 rec fee and 6.00 dvr fee, they waive 9.00 primary rec lease fee). 2.04/22= 9.3 percent
with a solo rec they collect 0.84 cents tax (they waive the 9.00 leased rec fee) .84/9 = 9.3 percent
with a 612 and a 722 they collect 11.57 on first bill only for taxes. (100.00 rec upgrade, 6.00 dvr fee, 10.00 solo hd-dvr fee, and they waive the 9.00 primary rec fee) 11.57/125 = 9.3 percent. from there on they collect only 2.33 a month taxes.
and for the record, dish is not charging you these taxes. your state of california is charging these taxes, dish is simply required by law to collect them.