I think it's a price worth paying. :)
Hopefully others here can give some recommendations, so you find a good fit for your needs / your own style of parenting etc, so you get the results you need.
My younger daughter had bad reflux as a baby, and also her personality is such that she is fairly high maintenance! I'm comparing to my older son, who also had bad reflux {they both had protein allergy} and even so, was able to manage sleep a lot better.
Anyway she was so bad that we{my husband and I would take shifts} would have to stay up with her most of the night trying to keep her settled {one night we literally stayed up ALL night, she was that unsettled!}
My older son is only 19 months older than her I had no one to support me, having just moved to the country, and my husband doesn't get home from work until late {once they are in bed} and also was travelling a lot at the time.
Anyway in the end when she was about 10 months old I tried a night nanny while my husband was away one week, it was just so I could get some sleep, I wasn't actually expecting 'results'.
I was fairly clear on what I wanted as far as when to offer feeds, patting through rather than leaving to cry etc, with her reflux I was just aiming to manage sleep rather than fixing it.
So I asked this lady just to do the same things I was already, and bring her in to me when feeds were needed.
What I found was that combination of having some sleep myself to be able to better cope, and also having someone else to do it, so the stress and anxiety I had from doing it every night, wasn't washing off on my daughter, made a huge difference.
We had the NN for only 3 nights, that was enough to settle her into a pattern of about 2 /3 wake ups a night, which was fine for her at 10 months old {and a walk in the park compared to what I had been doing} and by a year she was sleeping through.
BEST money I'd ever spent. I don't know if my daughter would have been ready {reflux wise} to have had the same results by doing it earlier, but do regret not having tried it at least.