That is maybe one of the cleaner ways of adding a P pickup down the bridge end of a Gibson bass, but it still doesn't look right. I imagine the mudbucker and P pickup don't exactly blend nicely either.
Odd to see the price like that. A lot of Japanese Ebay sellers knock the price down over aesthetic damage, if nothing else. Fullscale modifications should be factored in.
Maybe a daft suggestion, but maybe the seller doesn't realise the P pickups are a mod at all? Their description is fairly minimal.