Hmmm, Ebay is supposed to email me when someone posts wildsmith shoes, and it didn't for these. I see why -- for some reason, these aren't categorized under "clothing/shoes"; they only come up doing an "all categories" search for wildsmith. Anyway, nice boots but not my size. The antiquing suggests EG to me. They're actually a bit generic-looking now that I reconsider. I'd believe you if you told me they were Sargent or C&J or EG or Weston. The last isn't that distinctive.
Depends -- could be either depending on the maker or on the last. This boot is likely either Edward Green or Crockett and Jones, unless it is bespoke (and as there seems to be a posted size, I doubt it is bespoke).
I've sent the seller two emails that have not been responded to. I've decided that there are simply some sellers who do not regularly check their EBay email, for whatever reason. It doesn't necessarily mean they're bad sellers though, just inattentive.