After all the debate on renewed items, thought I'd report back.
I bought the renewed loop back jumper in green. The mend made no difference either way to my purchasing decision. I like the loopback stuff and missed the green one first time round/loved the colour. I can't remember seeing it in a sale, so didn't have the same aversion to price as some of the other items which I've recently seen sold much cheaper.
So - I'm keeping it. The top looks brand new other than the mend which is less obtrusive and more attractive in real life. I can't make out the damage underneath at all. The green colour really suits me.
I do think that Toast shouldn't be charging the original price when an item has since been reduced. As delivery and returns are free for everyone on the renewed items, folks can take a punt on quality.