Adding AFP protocol to Windows Server shares

Is there a way to add the Apple File Protocol (AFP) to Windows Server for shares, currently Windows uses SMB but the transfer rate to OSX clients is ridiculously slow, I am currently running an Ubuntu server box with AFP but would like to know if there is an option or way to get it working on Windows Server (2008 R2).

Microsoft used to include Services for Macintosh, but it's no longer supported in Server 2008, so you'll have to go for a third party solution.

There's no Windows port of netatalk, but you could of course run it virtualized. Otherwise, the only options appear to be the commercial products MacServerIP and ExtremeZ-IP. Unfortunately ExtremeZ-IP is quite expensive, at $795 for a 3 client license. MacServerIP has no listed price that I could find, which suggest it's also priced rather highly.