Advice on finding an engine?
 

Considering buying an engine for a Honda 92 Civic DX Hatchback. I've
done some searching through the JDM market online, and I'm only
slightly confused ;)
Living in Northern Canada so the pickings are slim and shipping is
high! Just looking for something in the 400-700 dollar range, and
hopefully reliable.
Anything I should watch out for? Sites you'd reccomend? Things to be
sure to get in purchasing an engine? Any advice would be great, I'm
terribely new to all this.
Thank you.