Once you purchase anything from that area, it's yours. Certain parts I wouldn't hesitate. Others (motors, electronics) would need to be discounted deeeep..... just in case there are issues w/the product you can't determine by visual inspect alone.
I saw 2 BBC's & 2 SBC's there last weekend. All looked like shipping damages only (engines tipped crushing v-covers/ dinging corners of the heads or manifold). Prices were marked down several hundred dollars to 'compensate' but what if there were issues w/something internally? Wouldn't be the first time a new motor had something wrong w/the assembly. Something like that where you might be able to return for exchange you'd be S.O.L & not worth the few hundred off. I'm a poor f@#ker though & will only gamble when the odds are extremely tilted my way.