500 Minutes and 700 Minutes are mentioned here in the small print under 'BT Home Phone' and also in the tariff guide. Neither is referred to in the former as being a legacy plan. The tariff guide says that 500 is no longer sold, but doesn't say that about 700 (although BT obviously no longer want to promote it).
The jump in price from PAYG to Unlimited is so great, it would be very unfair of them not to offer something in-between. Does anyone really need truly unlimited minutes, unless they are a business? Even BT's cheapest plan used to give inclusive calls to standard UK landlines at weekends. The value now is very poor. The old plans, which gave unlimited inclusive calls of up to 1 hour, made it much easier for users to keep track of their usage. Moving to monthly capped minute plans was a ploy to encourage people to sign up for the very expensive Unlimited so as not to have the worry of keeping track. And now, even those capped plans (promoted at the time as being more modern, in line with mobile phone operators' plans) are being squeezed out. Mobile phone providers offer several monthly allowance options, so this is a backward step.
