Been restoring vintage bicycles for many years now and have yet to find affordable suspended leather saddles. So, best of luck with that quest.
As for Ebay, or any other on-line un-seen purchase of a leather saddle, not a chance for me. Tried it a time or two and did not like what came in the post.
These days, I accept the fact that a decent suspended leather saddle will costalota (fake Italian for not affordable). Additionally, I want new because my old butt wants to be the saddle's break-in buddy.
In closing, I have found that patience, as often as not, will reward the patient person. Sooner or late, if you keep your eyes open for the right deal, the right deal just might come along.
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"98% of the bikes I buy are projects".