Existing shareholders including American Express Ventures and Advance Newhouse, have been joined by a range of new backers for a $10.25m round.

IfOnly, a US-based marketplace for specialised experiences, has secured $10.25m in series B capital from investors including payment processing firm American Express and media company Advance Publications, Techcrunch reported yesterday.

Internet company Digital Garage, XB Ventures, Khosla Ventures, Founders Fund and assorted individual investors also took part in the round.

American Express participated through its corporate venturing arm, American Express Ventures, while Advance Publications contributed funds through its Advance Newhouse subsidiary.

IfOnly operates a marketplace where users can purchase curated…