WGC are pretty reputable, i've never had any issues with them so I'd doubt it. Actually having a look, they've got pretty much nothing left from the ca range so I guess they're just selling off remaining stock cheap.
My LCT AK was on sale, the reason was because it had been in storage for a long time and had some corrosion on the inner barrel, this could be something similar but it won't be anything that's gonna cripple the gun I shouldn't think.