The latest unmasked bidwatcher ebuild is 1.3.6, however that version no longer works at all due to changes at Ebay. A 1.3.7 ebuild is available and works fine, but it is masked. Hence unless you manually unmask and emerge 1.3.7, bidwatcher does not work.
fixed in cvs http://cvs.gentoo.org/cgi-bin/viewcvs.cgi/gentoo-x86/net- misc/bidwatcher/bidwatcher-1.3.7.ebuild?rev=1.2&content-type=text/vnd.viewcvs- markup thx