Data trends on cheapest hotel rates as well as median rate for three months of three, four and five star hotels across some of the major cities in Australia & New Zealand.
This set covers February to April 2012, taken on the 2nd week of February 2012 (all rates are in US dollars for two adults for a one-night stay).
Three star [click for larger image]:

| City |
Check In Month |
Minimum Rate |
Median Rate |
Cheapest Hotel in the City |
| ADELAIDE |
February |
71.98 |
127.96 |
JACKSONS MOTOR INN |
| |
March |
72.68 |
149.59 |
JACKSONS MOTOR INN |
| |
April |
73.11 |
128.13 |
JACKSONS MOTOR INN |
| AUCKLAND |
February |
44.24 |
116.28 |
KIWI INTERNATIONAL AIRPORT HOTEL |
| |
March |
45.26 |
131.61 |
COUNTRY COMFORT AIRPORT GATEWAY HOTEL |
| BRISBANE |
February |
62.45 |
157.84 |
BOWEN TERRACE ACCOMMODATION |
| |
March |
80.16 |
174.22 |
BRISBANE MANOR HOTEL |
| |
April |
90.85 |
169.94 |
BOWEN TERRACE ACCOMMODATION |
| CHRISTCHURCH |
February |
90.12 |
137.70 |
AVALON COURT ACCOMMODATION |
| |
March |
81.59 |
127.33 |
AVALON COURT ACCOMMODATION |
| |
April |
109.29 |
132.53 |
SUDIMA HOTEL CHRISTCHURCH AIRPORT |
| GOLD COAST |
February |
63.06 |
170.45 |
BAY OF PALMS RESORT |
| |
March |
50.45 |
128.26 |
BAY OF PALMS RESORT |
| |
April |
69.47 |
136.49 |
BAY OF PALMS RESORT |
| MELBOURNE |
February |
72.47 |
134.65 |
CLAREMONT GUEST HOUSE |
| |
March |
81.23 |
146.76 |
MIAMI HOTEL MELBOURNE |
| |
April |
30.98 |
155.69 |
VICTORIA HALL ACCOMMODATION MELBOURNE |
| PERTH |
February |
90.85 |
218.05 |
CRITERION HOTEL PERTH |
| |
March |
90.85 |
239.41 |
CRITERION HOTEL PERTH |
| |
April |
96.19 |
209.04 |
CRITERION HOTEL PERTH |
| SYDNEY |
February |
74.31 |
166.72 |
CHALLIS LODGE |
| |
March |
35.27 |
184.90 |
ASCOT MOTOR INN |
| |
April |
32.04 |
176.35 |
Y HOTEL CITY SOUTH SYDNEY |
| WELLINGTON |
February |
54.06 |
107.61 |
LODGE IN THE CITY |
| |
March |
82.35 |
121.86 |
MERCURE WELLINGTON |
| |
April |
74.03 |
112.05 |
KINGSGATE PORTLAND HOTEL |
Four star [click for larger image]:

| City |
Check In Month |
Minimum Rate |
Median Rate |
Cheapest Hotel in the City |
| ADELAIDE |
February |
100.65 |
166.45 |
ADELAIDE MERIDIEN HOTEL & APARTMENTS |
| |
March |
101.54 |
212.41 |
MERCURE GROSVENOR HOTEL ADELAIDE |
| |
April |
100.56 |
177.71 |
COMFORT HOTEL ADELAIDE RIVIERA |
| AUCKLAND |
February |
24.66 |
139.55 |
BASE AUCKLAND |
| |
March |
24.72 |
155.22 |
BASE AUCKLAND |
| BRISBANE |
February |
93.15 |
203.56 |
MINTO STUDENT HOUSE |
| |
March |
105.81 |
235.14 |
RIDGE ON LEICHHARDT BRISBANE |
| |
April |
100.47 |
250.10 |
RIVERSIDE HOTEL SOUTHBANK BRISBANE |
| CHRISTCHURCH |
February |
100.01 |
171.00 |
AMORE MOTOR LODGE |
| |
March |
98.88 |
173.95 |
298 WESTSIDE MOTOR LODGE |
| |
April |
158.25 |
208.28 |
COPTHORNE HOTEL COMMODORE |
| GOLD COAST |
February |
80.16 |
201.40 |
REGENCY ON THE BEACH |
| |
March |
85.50 |
210.48 |
REGENCY ON THE BEACH |
| |
April |
87.64 |
223.38 |
AUSTRALIS SOVEREIGN |
| MELBOURNE |
February |
80.92 |
195.60 |
ATLANTIS HOTEL MELBOURNE |
| |
March |
89.12 |
224.45 |
ATLANTIS HOTEL MELBOURNE |
| |
April |
36.92 |
223.38 |
IBIS MELBOURNE GLEN WAVERLEY |
| PERTH |
February |
120.78 |
271.84 |
MONT CLARE BOUTIQUE APARTMENTS PERTH |
| |
March |
120.78 |
272.53 |
MONT CLARE BOUTIQUE APARTMENTS PERTH |
| |
April |
133.60 |
269.34 |
MONT CLARE BOUTIQUE APARTMENTS PERTH |
| SYDNEY |
February |
95.36 |
250.83 |
BREAKFREE BANKSTOWN INTERNATIONAL |
| |
March |
41.48 |
278.00 |
RYDGES HOTEL PARRAMATTA |
| |
April |
40.58 |
249.01 |
VIBE HOTEL NORTH SYDNEY |
| WELLINGTON |
February |
47.52 |
157.72 |
BASE WELLINGTON |
| |
March |
47.67 |
198.90 |
BASE WELLINGTON |
Five star [click for larger image]:

| City |
Check In Month |
Minimum Rate |
Median Rate |
Cheapest Hotel in the City |
| ADELAIDE |
February |
124.49 |
244.27 |
HILTON ADELAIDE |
| |
March |
140.82 |
325.22 |
STAMFORD PLAZA ADELAIDE |
| |
April |
57.37 |
246.90 |
SEBEL PLAYFORD HOTEL ADELAIDE |
| AUCKLAND |
February |
81.08 |
276.40 |
PROXIMITY APARTMENTS |
| |
March |
81.59 |
347.28 |
CITY LODGE ACCOMMODATION |
| |
April |
25.51 |
278.14 |
SKYCITY AUCKLAND HOTEL |
| BRISBANE |
February |
145.02 |
340.15 |
MERITON SERVICED APARTMENTS - ADELAIDE STREET |
| |
March |
223.53 |
422.72 |
QUAY WEST SUITES BRISBANE |
| |
April |
212.69 |
366.28 |
BRISBANE MARRIOTT HOTEL |
| CHRISTCHURCH |
February |
244.91 |
285.76 |
GEORGE HOTEL CHRISTCHURCH (THE) |
| |
March |
281.05 |
382.24 |
GEORGE HOTEL CHRISTCHURCH (THE) |
| |
April |
281.97 |
382.90 |
GEORGE HOTEL CHRISTCHURCH (THE) |
| GOLD COAST |
February |
98.20 |
266.45 |
MERITON SERVICED APARTMENTS - BROADBEACH |
| |
March |
98.33 |
269.91 |
MERITON SERVICED APARTMENTS - BROADBEACH |
| |
April |
105.81 |
284.19 |
MERITON GOLD COAST |
| MELBOURNE |
February |
147.27 |
307.87 |
ART SERIES [THE BLACKMAN] |
| |
March |
160.69 |
342.02 |
ROYCE HOTEL MELBOURNE |
| |
April |
46.81 |
331.33 |
ROYCE HOTEL MELBOURNE |
| PERTH |
February |
190.25 |
433.01 |
PARMELIA HILTON PERTH |
| |
March |
199.87 |
427.79 |
PARMELIA HILTON PERTH |
| |
April |
122.38 |
319.57 |
PARMELIA HILTON PERTH |
| SYDNEY |
February |
128.26 |
405.09 |
SYDNEY CENTRAL YHA |
| |
March |
85.83 |
421.11 |
SOFITEL SYDNEY WENTWORTH |
| |
April |
61.53 |
369.45 |
SOFITEL SYDNEY WENTWORTH |
| WELLINGTON |
February |
176.34 |
247.19 |
INTERCONTINENTAL WELLINGTON |
| |
March |
200.44 |
286.71 |
BOLTON HOTEL |
| |
April |
30.58 |
262.93 |
INTERCONTINENTAL WELLINGTON |
NB: RateGain specializes in competitive price intelligence and rate shopping solutions for hotels, online travel companies and airlines. It currently tracks more than one billion hotel rates every month across countries in US, Europe, Middle East, Asia and Latin America.
NB2: The above data is indicative in nature and RateGain cant be held liable for its accuracy or usefulness for any purpose.