Introduction
to Economics ECO401
VU
Lesson
6.3
MARKET
STRUCTURES
(CONTINUED...........)
PRICE
DISCRIMINATION
Price
discrimination (PD) happens
when a producer charges
different prices for the
same
product
to different customers.
Types
of Price Discrimination:
PD
can be of three
types:
i.
1st degree (everyone charged
according to what he can
pay),
ii.
2nd degree (different prices
charged to customers who
purchase different
quantities)
and
iii.
3rd degree (different prices to
customers in different
markets).
Consequences
of PD:
PD
can allow firms making
losses to make profits,
firms to increase their
supernormal profits if
make
supernormal profits; allow
goods to be produced that
would otherwise not be
produced.
The
pre-requisites of price discrimination
are:
i.
That markets should be
independent (it should not
be possible for the
different
customers
to arbitrage the price
differences in the
market).
ii.
Firms should have the
flexibility to price discriminate
(i.e. should have
some
control
over prices, so perfect
competition ruled
out).
iii.
Price elasticity of demand
for different customers
should be different.
Price
discrimination can be both,
beneficial
or harmful for
public interest depending on
a
number
of factors (equity or fairness
concerns, the production of
goods otherwise not
produced,
the use to which
price-discriminating firms put
their supernormal profits
to, etc.).
MONOPOLISTIC
COMPETITION
Monopolistic
competition is also characterized by a
large number of buyers and
sellers and
absence
of entry barriers. In these
two respects it is like
perfect competition. Firms
are price-
takers
but not in the extreme
sense of perfect
competition.
Products
are differentiated and in
this respect, it is different
from perfect
competition.
Short
run and Long run
under Monopolistic
Competition:
In
the short run, super
normal profits are possible,
but, in long run only
normal profits can be
earned.
Equilibrium obtains where
the AR curve becomes tangent
to the AC curve.
Public
interest
depends upon the position of
AC at the point of tangency. If
the AR curve is steep
then
the
point of tangency will
produce an output that will
be well to the left of right
the point where
P=
MC or P=ACminimum.
Since
products are differentiated,
there is room and rationale
for advertising and
product
promotion.
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