getting into the wholesale warehouse crowd is impossible now days.
As for starter ropes, the FEW that I ever bought were 2 foot long, approx. Not a big seller and they usually come in kits with carb, spark plug, ignition module, fuel and air filters all in 1 package priced at $9 to !5. depending on what saw its for.. Thats the way I buy parts.
Getting oem parts to re-sell is not very likely. EVERYBODY is out to sell parts now AND why pay you $15. for a part that the guy in the ad next to yours is $5. or $7. for the exact same part? ---- just sayin! Dog eat dog world out there in case you havent done any research on the parts business!
Obsolete parts are a good seller, BUT not a high volume deal either, -- more of a service than anything else.