Sure, we paid £700 for ours plus £80 delivery (which I didn't think was too unreasonable to be honest). I think that's about the going rate for one really.
It's a JDM import engine from an automatic car - unknown mileage but it should have had an easier life than a UK one.
Typically since I've now bought one there's a k24a3 from an accord showed up on eBay for £570! It doesn't look as clean as ours but would likely be just fine.