ECCOWomen's Flash 59 Ankle Strap Sandals

Hi , I’m size 5.5, are they proper fit or better to get size 6 ?

Please advise what size in European sizes is the 7.5 and also the 8/8.5. Also why is there such a disparity in price between the 7.5 and the 8/8/5?

does this have a removable foot bed?

Please advise the european size of these sandals. i require the size uk 4.5 = eu size 37. what is stamped on the sandals you are marketing as 4.5/5?