what size/brand are your current shoes?

I would be hesitant to buy cycling shoes without trying them on, especially on EBay where you frequently can't return something "just" because it's the wrong size.

People seem to be fairly variable in whether they find a particular brand of shoe comfortable or not, and also whether they think it runs big or small.

I wear a 7.5 or 8 street shoe, and a size 39 Sidi (men's or women's). Length of the men's shoes is the same as women's shoes in the same numerical size, but the women's shoes are a bit narrower overall and especially are narrower in the heel (they fit me a bit better than the men's).

Previously I had Shimano shoes that were also 39s and a good fit.

Has Sidi's size chart changed this year? I seem to remember that 39 was 7.5 on their chart; on the chart I just found on TE, 39 = 7.

Anyway, I'd be worried about buying them on EBay if you've never tried them on before.