If you plan on feeding using "The Munson Plan" as a guideline (I have and have been very pleased with the results) you’ll feed single or double pinkies every 4-5 days. I would recommend it, since it takes a lot of the guess work out of things.
For example:
December 1st - 1 pinkie
December 6th - 1 pinkie
December 11th - 1 pinkie
December 16h - 1 pinkie
December 21st - 1 pinkie
December 26th - 1 pinkie
December 31st - 1 pinkie
So in the month of December feeding single pinkies, you'll need 7 pinkies.
Hopefully this will give you an idea of what your usage will be, obviously it will be more once to switch to doubles.
Please let me know if you have any questions.
Regards,
Steve
P.S. The following is "The Munson Plan" published by Dean Arnold a moderator on this board
Mouse -- Mouse Weight -- Frequency -- Snake Weight
--------------------------------------------------------
Single pinkies -- 2-3 grams -- 4-5 days -- 4-15 grams
Double pinkies -- 2 x 3 grams -- 4-5 days -- 16-23 grams
Small fuzzies -- 5-7 grams -- 5-6 days -- 24-30 grams
Fuzzies -- 7-9 grams -- 5-6 days -- 31-50 grams
Hoppers -- 9-12 grams -- 5-6 days -- 51-90 grams
Weaned -- 14-20 grams -- 7 days -- 91-170 grams
Adult -- 24-30 grams -- 7-x days -- 170+ grams
Jumbo Adults -- 40-50 grams -- 7-x days -- 400+ grams