Anybody have these or can offer recommendations on where to source suitable and more affordable used replacements?
Thanks!
Jim
Updated: Part #s are 0450046-3/0450046-5 (aft) and 0450050-1/0450050-3 (front).
https://www.wagaero.com/cessna-spinner-150-style-spinner-w-backplates-non-faa-app.html 
(pssst....once painted, noone will be able to tell the difference.)
otherwise, buy off eBay but be sure you get correct P/N ( many sellers are wrong on what they think they are selling, and most know EXACTLY what a new one costs and price accordingly)
Or- start calling salvage yards, but again they also know what they are worth.
BTW_ The Cessna parts are still avail, the FWD and AFT spinner bulkheads are about $1000 each.