are there such things as harley wreckers out there? people have to be crashing frequently enough to warrant a wrecker existing, but all i can find is parts on ebay, which are more often than not new.

Not exactly a wreckers but Richardson's Harley have a very large 2nd hand parts store.

http://www.richardsonsharleydavidson.com.au/parts-and-accessories/secondhand-parts/