Excellent, inviting presentation of domain names highlighted by high quality photographs ( and videos on occasion).
Re "more enquiries" - well, IMO the site is strong and " more enquiries " might (?) be incoming if you had both a BIN price ALONG WITH an " Or Make Offer" choice on various names.
That would at least will provide prospective buyers a desired dollar range that is anticipated for the name.
The site is sharp looking and may give the visitor the impression of very high prices ( which may be true) which inhibits enquiries.
Thought your " Buy Now " section and selection of the Buy Now names to be reasonably priced.
Perhaps allow visitors/offers/enquiries to see the methods of acceptable payments prior to adding to the cart.
Also, consider accepting payment/offers in either " pounds or dollars".
Nice work.