[Nuvistor]

Just before I finished in the trade the firm had some slot machine CTV’s on rental. I didn’t do the emptying, the boss did that, not because we weren’t trusted just it kept us available for repairs, he eventually employed someone to empty them
Any way he arrive at one customer to find no one at home but he could see the TV switched on, calling back later he asked why leave the TV on, “Well I am saving up so I have to keep putting money in the meter to keep it going”. Any money over monthly rental was returned to the customer.
Quite often customers would request that he shortened the time per 50p so they could save up.

I found it a bit sad that they had to resort to those tactics to save a bit of money, not to mention the extra cost of electricity on some of those early CTV sets.