Is it worth getting the Intel B580 for £270 in the UK

I have a budget of £750 and want to build a gaming pc for 1080p AAA games at high/ultra settings. Should I get the intel arc b580 at the current price of £270 or get another card, e.g. a used 6700xt on ebay for £265. My main problem is that I really want the performance : value ratio of the B580, but the current price means that I will be left with around £480 to build the rest of my system. What do you all think?