I got mine off their ebay store. Pretty sure it was about $80 ish delivered...
Edit...
Linky
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com.au%2Fulk%2Fitm%2F252780282700
I started BIAB'ing and had the same issue as you regarding hoppyness. I got an immersion chiller from cheaky peak and it changed my beers greatly! I found their chiller was best priced for what you get.
Thats a shame you got that experience. I bought a V3 Robobrew and had an issue with the control board. I emailed them and Kee replied really quickly and gave me several options on how to fix it. Initially we thought it was a faulty temp probe so they sent one out to me. While it was still in...
They were all 83.3 odd % or something. I couldnt remember exactly, but yes I use acidulated malt also but dont factor it into the recipe. The amounts dont change anything much, if at all.