Reasonably priced altar candles are SO hard to find these days! I've been going all over town trying to find the traditional dinner-style candle in variations of colours in Melbourne and it is SO hard!
This website sells candles at a really reasonable price
The above two hours tapers are $6.50AUS for 20 - and you can choose 20 of one particular colour if you need heaps for some kind of celebration or handfasting.
They also have packs of small, lean 'wish' candles at 20 per box for $7.50 if for some reason you want to have a lot of gold or silver candles.
I am rather keen on the cat candle found in the Spell Candles section (below - $7.50AUS)
Go to the site and click on 'Candles' on the left hand side from the home page: