Buying a used motor

I had posted for help on this group and got some great advice, so I'm
back for more

I am looking at buying a used 1993 Honda Civic DX engine (D15B7?), and
found a couple of places: asapmotors.com, and Douglas motors of New
York. The former is under $500 plus about $80 shipping offering a 90
day warranty, while the latter charges about $100 more and doubles the
warranty. I don't know that a warranty will help when I have to pay to
have a bad motor pulled and the good one put back in it's place, so I
don't see the benefits (feel free to educate me if I'm wrong). Both of
these motors have between 30,000 and 40,000 miles on them.

The question is, should I get a used one locally with 100,000 miles on
it for about $400 and similar warranty, or spend the extra for the sake
of mileage? Please let me know if you know of any cheaper sources with
low miles on them. Also, if I pay via credit card, is there protection
if I get sold a piece of scrap?

Thanks.

 

That is why most people let the guy replacing the engine pick it out even
though it costs extra to buy it thru him.

 

the length of warranty doesn't matter much in this situation. either it
works right away, or it doesn't. the most you need is about a month to
see if it drinks oil, but that's it.

look into the jdm japanese imports.

yes, a credit card /definitely/ offers you buyer protection. unlike
debit cards. some charge cards do, some don't.