Windows 7 Family Packs that offer homes three-licences for the OS will be priced at $149.99 (£92) in the US., a US-based online seller of computers, electronics and office supplies, lists something called W7 Family Pack - Home Prem Upg on its site for $138.99 (£86), an $11(£6) discount from the $149.99 it claims is the package's suggested retail price.

The software, which will purportedly let users upgrade as many as three PCs in a single household to Windows 7 Home Premium, is listed as "discontinued" by Fadfusion.

ZDNet blogger Ed Bott has also reported finding two other resellers, Expercom and University IT Computer Sales listing Windows 7 Family Pack, at prices of $136.95 (£84) and $144.95 (£89), respectively. However, both sites quickly pulled their Family Pack listing after Bott's article highlighted the pack's availability.

Last week, Bott and another blogger, Kristan Kenney, uncovered information about the Family Pack, including the three-licence limits, in the end-user licencing agreement (EULA) of a recently leaked build of Windows 7.

Microsoft has declined to confirm or deny that it would offer a Family Pack for Windows 7. "We expect to have other great offers in the future as we lead up to and beyond general availability," a spokeswoman said. "[But] we have nothing to announce at this time."

It is also unknown whether the same pricing structure for possible Family Packs will apply in the UK. Microsoft is offering the operating system without Internet Explorer 8 in Europe, which has led to different prices for the OS, compared to the US.

In 2007, the company sold a two-licence Family Pack for Vista Home Premium. However, customers had to have also purchased a full or upgrade edition of Vista Ultimate, the most-expensive version in the line.

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See also: Mesh pays users £5 to upgrade to Windows 7