WordNet (r) 3.0 (2006):

sales talk
    n 1: promotion by means of an argument and demonstration [syn:
         sales talk, sales pitch, pitch]

Moby Thesaurus II by Grady Ward, 1.0:

73 Moby Thesaurus words for "sales talk":
   address, after-dinner speech, allocution, allurement, ballyhoo,
   blandishment, cajolement, cajolery, chalk talk, coaxing, conning,
   debate, declamation, diatribe, engagement, enlistment, eulogy,
   exhortation, filibuster, forensic, forensic address, formal speech,
   funeral oration, harangue, hortation, hortatory address, inaugural,
   inaugural address, inducement, invective, jawboning, jeremiad,
   lobbying, oration, patter, pep talk, peroration, persuasion,
   philippic, pitch, preaching, preachment, prepared speech,
   prepared text, public speech, reading, recital, recitation,
   sales pitch, salesmanship, salutatory, salutatory address, say,
   screed, selling, set speech, snow job, soft soap, solicitation,
   speech, speechification, speeching, spiel, suasion, sweet talk,
   talk, talkathon, tirade, valediction, valedictory,
   valedictory address, wheedling, working on