Try and live in Aus where re-sellers of NG and BB sell 50ml which I guess is about 2 oz for AUS$10. :cry:
I bothered with cheaper brands and seller but just wasn't happy with how FOs performed.
I just got NG order of 8 x 1oz bottles which I paid AUS$60, that's including postage. Which I think is expensive but nothing I can do, I really like my NG FOs.
Australian re-seller of NG only sells 50ml bottles which are AUS$10 and that puts me off big time, because I already lost enough $$$ spending on FOs I don't like. This way I get smaller 1 oz bottle and even if the FO is a dud, I don't loose as much. Postage from US is already close to postage withing AUS, so not much loss there.
I order smaller bottles first and then if I like the FO, next time go up to 2oz. I don't sell, so that size FO is pretty much what we need.
And I also learned through experience, to test every FO on small soap, not a full batch. Lost to many batches that way.
For me, great ones from NG are:
Lotus blossom, Australian bamboo grass, BR and vanilla, Love spell, Brown sugar & fig (lovely in wax), all these stick nicely in soap.
From BB:
Kumquat, Sensuous sandalwood (blended with vanilla), great in CP, stick forever. Kumquat has to be one of my favourite FOs, it's really lovely.
White tea and ginger, Summer fling, great in LS, LS stays clear, but both disappear in CP. I really like them, but use them only in LS and in bubble bars if I'm to use them withing few weeks.
I pretty much never use EOs. Try them every now and then but get really poor results in CP. I tested Lemon myrtle the other week and all I got was some weird wet sock smell, none of that lovely lemony scent was left after few days. Luckily it was my testing batch, so I only used maybe 1.5oz of soap.