Cheaper lenses are available on the high street. I’m still on older design monthly from Specsavers and price keeps dropping. Think I pay about £8 a month now (I don’t buy their solution as I vary use so I just get the stuff from shops).
Last visit they suggested some longer wearing ones, for a couple quid more a month, but then said there’s no sign of issues wearing the ones I’ve got and if they seem comfortable, stick with them.
That said, last couple of Specsaver deliveries have had flaws. One lens was off in prescription despite correct on the label, and another was damaged.
Noting part of what I pay includes regular check ups, and despite what some may experience, I’ve had as good or better than independent quality of service. Also discount/free cheapie glasses inclusive eye test.