Rosie, promise me you won't use an epilator down there. I have a horror story for this. My friend was using one to do her own brazilian..and some skin got caught IN the epilator teeth. Once she got the thing turned off, the hard part was getting the skin out of the epilator...major OUCH! She was bruised and cut and worse the damn thing got infected. So please, keep epilators AWAY from your girly bits
They're not designed for such sensitive areas.
You could try looking around for better pricing at different salons you can get great brazilians for reasonable prices. Do a bit of research of the salons in your area.
I know others have suggested waxing yourself at home, but that can be equally dangerous, getting the temp of the wax right, getting in the right spots, supporting the skin properly etc. And it can be hella messy. Plus the wax at home kits wax isn't the same as professional quality wax, so it won't do as good a job as a professional wax would.
I know I'm not helping you here! But I REALLY don't want you to hurt yourself! Many a time I have had to fix up mistakes/ or get all the hair that girls have missed trying to do their own brazilians. Some of the bruising I have seen.. I'm surprised the girls could walk!
You could look into getting it done at a beauty college/tafe in your local area - they always need models, and it's done in a clean and hygienic environment and they are always supervised at all times during the treatment. It would be cheap too $10-$20 and sometimes it's even free! God knows we always needed clients to book in for clinic when I was training! So it can't hurt to ring up your local college to see when they have clinic. I know the idea of letting a student do it might be daunting, but if you can get past that, you'll be fine.