"I obtained this thermos for free" Seems correctly ordinary to me. "That thermos was for free" Appears terrible: I might just say "That thermos was free." herisson Aunque no encuentro nada en el DRAE ni en el DPD on line, me animo a afirmar que las comillas y el apóstrofo https://funhousepuzzlegame69257.tinyblogging.com/facts-about-grimelda-fun-house-browser-version-revealed-82304323