I don't have any occupational pensions. I'm just lucky that I've been left some money by a relative. And I too am mortgage free.
So neither of our costs would do for the calculation, then.
You could give us a reasonable guess what you think costs would be. Or ask a family member. Then we can accept that your opinion is an informed one. And then I can work out what "considerably more" is in percentage terms, two values in fact, before and after costs are taken into account.
Work may pay more, but that is different from it paying to work. It depends on the circumstances. Yes, UC is more than min wage f/t. What we have moved on to discussing, I thought, was what you meant by "considerably more" (your words). It isn't as much as you would like to think, is my guess.