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 November 2012 to January 2013, taken in the 3rd week of October 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 |
Jan |
66.47 |
98.66 |
PARINGA |
| |
Nov |
70.00 |
113.20 |
JACKSONS MOTOR INN |
| |
Dec |
70.00 |
125.09 |
JACKSONS MOTOR INN |
| AUCKLAND |
Jan |
40.70 |
96.85 |
JUCY HOTEL (PREV. ASPEN HOUSE) |
| |
Nov |
34.59 |
89.53 |
JUCY HOTEL (PREV. ASPEN HOUSE) |
| |
Dec |
40.70 |
106.67 |
JUCY HOTEL (PREV. ASPEN HOUSE) |
| BRISBANE |
Jan |
26.00 |
92.74 |
BOWEN TERRACE ACCOMMODATION |
| |
Nov |
25.96 |
145.40 |
BOWEN TERRACE ACCOMMODATION |
| |
Dec |
25.96 |
140.20 |
BOWEN TERRACE ACCOMMODATION |
| CHRISTCHURCH |
Jan |
91.00 |
125.58 |
AVALON COURT ACCOMMODATION |
| |
Nov |
45.58 |
112.53 |
HAKA LODGE |
| GOLD COAST |
Jan |
123.59 |
192.13 |
BREAKFREE COSMOPOLITAN RESORT |
| |
Nov |
51.93 |
124.63 |
ARRIVAL ACCOMMODATION CENTRE |
| |
Dec |
78.00 |
179.39 |
SUNSHINE BEACH RESORT |
| MELBOURNE |
Jan |
82.00 |
163.68 |
CLAREMONT GUEST HOUSE |
| |
Nov |
62.31 |
123.59 |
BASE ST KILDA |
| |
Dec |
77.00 |
143.72 |
ALL SEASONS KINGSGATE |
| PERTH |
Jan |
143.32 |
223.29 |
CITY WATERS PERTH |
| |
Nov |
36.35 |
196.29 |
COOGEE BEACH HOLIDAY PARK |
| |
Dec |
36.35 |
218.10 |
COOGEE BEACH HOLIDAY PARK |
| SYDNEY |
Jan |
56.29 |
196.99 |
BASE SYDNEY |
| |
Nov |
56.29 |
163.57 |
BASE SYDNEY |
| |
Dec |
56.29 |
177.21 |
BASE SYDNEY |
| WELLINGTON |
Jan |
74.47 |
110.42 |
BASE WELLINGTON |
| |
Nov |
61.04 |
105.81 |
QUALITY HOTEL ON THORNDON |
| |
Dec |
64.30 |
105.81 |
SHARELLA MOTOR INN |
Four star [click for larger image]:

| City |
Check In Month |
Minimum Rate |
Median Rate |
Cheapest Hotel in the City |
| ADELAIDE |
Jan |
93.00 |
164.61 |
THE CHIFLEY ON SOUTH TERRACE |
| |
Nov |
82.05 |
170.32 |
COUNTRY COMFORT ADELAIDE |
| |
Dec |
90.02 |
171.36 |
MERCURE GROSVENOR HOTEL ADELAIDE |
| AUCKLAND |
Jan |
36.00 |
132.67 |
AUCKLAND AIRPORT INN |
| |
Nov |
36.00 |
129.41 |
AUCKLAND AIRPORT INN |
| |
Dec |
36.00 |
140.85 |
AUCKLAND AIRPORT INN |
| BRISBANE |
Jan |
101.78 |
195.25 |
TRAVELODGE GARDEN CITY BRISBANE |
| |
Nov |
88.28 |
192.13 |
ELLIE'S GUESTHOUSE |
| |
Dec |
88.28 |
206.67 |
ELLIE'S GUESTHOUSE |
| CHRISTCHURCH |
Jan |
97.00 |
130.24 |
ABBEY MOTOR LODGE |
| |
Nov |
50.46 |
129.41 |
NORTH SOUTH HOLIDAY PARK |
| GOLD COAST |
Jan |
89.32 |
219.34 |
AUSTRALIS SOVEREIGN |
| |
Nov |
65.43 |
186.94 |
OUTRIGGER RESORT GOLD COAST |
| |
Dec |
46.73 |
217.06 |
INTERNATIONAL BEACH RESORT GOLD COAST |
| MELBOURNE |
Jan |
74.00 |
231.95 |
VICTORIA HOTEL MELBOURNE AN ALL SEASONS HOTEL |
| |
Nov |
64.43 |
167.21 |
THE ALBANY HOTEL |
| |
Dec |
77.89 |
176.55 |
ENTERPRIZE HOTEL MELBOURNE |
| PERTH |
Jan |
95.00 |
236.79 |
SCARBOROUGH OBSERVATION RESORT |
| |
Nov |
46.73 |
248.21 |
WOODMAN POINT HOLIDAY PARK |
| |
Dec |
46.73 |
221.88 |
WOODMAN POINT HOLIDAY PARK |
| SYDNEY |
Jan |
99.70 |
241.41 |
TRAVELODGE MACQUARIE NORTH RYDE |
| |
Nov |
66.47 |
228.01 |
RAILWAY SQUARE YHA |
| |
Dec |
74.78 |
226.93 |
RAILWAY SQUARE YHA |
| WELLINGTON |
Jan |
72.00 |
151.12 |
KINGSGATE PORTLAND HOTEL |
| |
Nov |
65.11 |
137.55 |
KINGSGATE PORTLAND HOTEL |
| |
Dec |
54.69 |
118.02 |
KINGSGATE PORTLAND HOTEL |
Five star [click for larger image]:

| City |
Check In Month |
Minimum Rate |
Median Rate |
Cheapest Hotel in the City |
| ADELAIDE |
Jan |
109.00 |
254.44 |
GRAND CHIFLEY HOTEL |
| |
Nov |
90.35 |
246.66 |
ADELAIDE CENTRAL YHA |
| |
Dec |
90.35 |
217.06 |
ADELAIDE CENTRAL YHA |
| AUCKLAND |
Jan |
67.80 |
178.24 |
CITY LODGE ACCOMMODATION |
| |
Nov |
78.13 |
173.92 |
YHA AUCKLAND INTERNATIONAL |
| |
Dec |
84.00 |
188.25 |
CITY LODGE ACCOMMODATION |
| BRISBANE |
Jan |
119.43 |
233.67 |
HOLIDAY INN BRISBANE |
| |
Nov |
114.24 |
279.37 |
SCARBOROUGH BEACH RESORT |
| |
Dec |
114.24 |
248.21 |
CENTRAL WESTEND APARTMENTS |
| CHRISTCHURCH |
Jan |
66.00 |
236.52 |
DESIGNER COTTAGE |
| |
Nov |
66.00 |
237.01 |
DESIGNER COTTAGE |
| GOLD COAST |
Jan |
107.75 |
333.37 |
HOTEL GRAND CHANCELLOR SURFERS PARADISE (EX COURTYARD BY MARRIOTT RESORT) |
| |
Nov |
67.51 |
255.48 |
BAY OF PALMS RESORT |
| |
Dec |
117.55 |
317.80 |
HOTEL GRAND CHANCELLOR SURFERS PARADISE (EX COURTYARD BY MARRIOTT RESORT) |
| MELBOURNE |
Jan |
107.33 |
329.03 |
VIBE HOTEL CARLTON MELBOURNE |
| |
Nov |
93.47 |
238.87 |
COSMOPOLITAN ST KILDA MELBOURNE |
| |
Dec |
96.59 |
254.40 |
THE SEBEL & CITIGATE ALBERT PARK MELBOURNE (FORMERLY CARLTON CREST HOTEL) |
| PERTH |
Jan |
67.00 |
329.22 |
HOTEL NORTHBRIDGE |
| |
Nov |
67.00 |
315.72 |
HOTEL NORTHBRIDGE |
| |
Dec |
67.00 |
289.76 |
HOTEL NORTHBRIDGE |
| SYDNEY |
Jan |
111.12 |
365.90 |
MERCURE HOTEL PARRAMATTA SYDNEY |
| |
Nov |
76.85 |
324.55 |
BOUNCE HOTEL |
| |
Dec |
123.60 |
331.30 |
VIBE HOTEL RUSHCUTTERS SYDNEY |
| WELLINGTON |
Jan |
81.00 |
189.54 |
JAMES COOK HOTEL GRAND CHANCELLOR |
| |
Nov |
80.58 |
210.80 |
JAMES COOK HOTEL GRAND CHANCELLOR |
| |
Dec |
80.58 |
202.66 |
JAMES COOK HOTEL GRAND CHANCELLOR |
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.
NB3: Approximated to the nearest possible value.