Both Zen and Plusnet have two charging structures. The Plusnet one is based on Market A or Market B. The Zen one is based on the presence or absence of WBC.
There is no direct relationship between Market A/B classification and WBC/not-WBC.
Market A can have WBC, so Plusnet would be high but Zen low. Market B can fail to have WBC, so Plusnet would be low but Zen high. Comparing the ADSL prices as you did at the beginning is therefore invalid.
That fact that Plusnet charge a premium for FTTC in Market A appears to be not driven by BT Wholesale pricing, as Zen and probably most or all others do not charge such a premium. But the whole question of that has absolutely nothing to do with Zen's differential pricing structure for "up to 8Mbps" ADSL.
That is simply not the case. It is wrong; it is incorrect; it is untrue; it is a dead parrot.
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Edited by RobertoS (Tue 10-Nov-15 14:04:06)