You should have asked about a month ago. I binned about 20 of them because I preferred 500ml and they were just taking up room in the shed.
However, I will have some 500ml bottles going soon. I had a bottle bomb on Wednesday night (in the kitchen - glass and beer everywhere, even as far as the front door!) so I've been banned from having glass bottles in the house unless they are in the fridge. Don't want to get rid until I definitely have replacements lined up rather than the only beer receptacles I have been 38 PET bottles and 1 Easy Keg.