Parivel, I searched and searched, and emailed and emailed for exactly what you are looking for. I searched forums, endless optics providers ect. and wasted more time than I care to admit. I found nothing with anywhere near the bang for the buck as the 80ed doublet complete scopes (although there is the barska 80 fpl-51 triplet). If you find something, please let us know, but my advice for a cheap objective lens is finding a used 80 fpl-53 doublet complete scope. I picked up mine for $250 (US dollars). Someday I might buy a TS optics 90mm objective, but for saving money, it really doesn't look like buying the objective is the cheapest route until you are buying something much higher end, and even then it appears to be about a 30% savings and very rare used.
Good luck with whatever you end up finding!
-Richard