a friend used Repromed for their first, and with their second has been trying Fertility SA, as they were quite a bit cheaper, the run out of St Andrews I think, it may be worth a look into the pricing differences because it was quite significant I believe. Where as previously Repromed was the only option.
Beema is spot on - Fertility SA is a bit cheaper (some of the Repro Dr's have 'defected' to there). It depends on the treatment though, the savings CAN add up to quite a few hundred dollars. For us though, we are staying with repromed as ....
a. they know our medical history and issues, and
b. as they have a northern clinic which is 5 mins from home and 2 mins from work the petrol and travelling time we would save for the numerous visits would be a factor too

A girlfriend I work with had her first with repro and is currently pregnant with her second with Fertility SA and was very happy with them

Both have quite extensive websites with all the costs outlined on them, so definitely worth a bit of research