"and he shall not appear in the presence of the L-rd empty-handed": of the offering. The Torah did not assign a specific amount for it, but the sages did. Beth Shammai said: The re'iah (the burnt-offering of "appearance"), two (pieces of) silver, and Beth Hillel say: a m'ah of silver; and the simchah offering (i.e., the festive offering, the chagigah,) two (pieces of) silver.
(Ibid. 17) "according to the blessing of the L-rd your G-d that He has given to you": From here they ruled: One who has many "eaters" (i.e., a large family) and little wealth brings many peace-offerings (wherewith to feed his family) and few burnt-offerings, (these being entirely consumed). One who has few "eaters" and much wealth brings few peace-offerings and many burnt-offerings. (One who has) little of both, of such a one they said: a m'ah of silver and two (pieces) of silver. (One who has) an abundance of both — of such a one it is written "Each man, according to the gift of his hand, according to the blessing of the L-rd your G-d that He has given to you" (i.e., he gives both in abundance.)