Identify the pricing strategy each seller uses in the items below:
a. A local bar hosts "Ladies' Night" where women pay half-price.
b. A local tire store offers Firestone tires at $160 each, or $400 for a set of 4.
c. The Sands, a local country club, charges $4000/year to join, plus a $30 greens fees each time you play a round of golf.
d. Charmin Ultra toilet paper is sold only in 12-roll packages.
e. At Denny's, you can order a bacon & egg breakfast, but you can also order bacon and eggs individually.
f. Lie-Nielsen Toolworks sells a handplane made of ordinary cast iron, but for a premium price you can buy the same plane in beautiful cast bronze.