HOKA womens Ora Recovery Slide

I wear 7 and sometimes a 7.5. What size should I get?

Are this true to size? I had ordered before a size 7 women and they were big then ordered a size 6 women and a it was a tad small?

why are these priced 30 dollars more than the Hoka site?

Do your feet sweat in these shoes? Do they make little fart noises when you walk?