cheap K56Flex modems..

where would be a good place to get a cheap K56Flex modem? Do some winmodems work now in linux?

the distro is SuSE 8.0 or Red Hat 8.0

or, what's a good, yet cheap brand/model of external modem?

my bro needs a replacement to a USR 56K v.90 modem that up and died. I'm kinda fed up with USR modems, and something that isn't USR works alot better on our phone lines here...

thanks!