I would say its poor value.
For £15 on EE as an example you can get a couple of gig of data, unlimited calls to 01/02/03 and mobile numbers, voice mail, call redirect, caller display.
On top of that, for chargeable calls there is no call connection fee and the phone can be used anywhere in the UK vs just at home.
For the £18 I pay sky I get no inclusive calls, no call redirect, call connection charges, no internet (is an additional product). Sky is unusual in that they provide caller display inclusive, most landline providers in the UK do not.
Edited by Chrysalis (Mon 17-Jul-17 13:30:34)