I honestly believe that you should not use any "ready" bought product. If you are interested in triangular arbitrage you should learn to code it (ie. python) to know what your bot is doing. Triangular arbitrage is still working, mostly not on the highest volume coins and it is not hard to learn the basics of developing this kind of bot. Especially when you can use many free sources on how to do it.
I was trading the Forex for about 14 years and I tested many many trading robots but just 2 of them was working on the long run. You have to build experience to know when you are about to be scammed!!! Just ask yourself: why should anybody sell a profitable bot?
Good news is, triangular arbitrage is still working very fine. And with the right lines of code you can generate a steady profit!
I believe that if it was easy or possible for him to code, he would not have thought of looking for an option to purchase an arbitrage Bot, coding might be an easy thing for you because it has probably been a part of you for so long, and you have taken years to study or learn it, but for those that are even finding it difficult to cope with a better understanding of crypto, are they the ones that wants to code?
People like me that is good at system, but when it comes to coding, I fail woefully in this aspect, if I am interested in arbitrage, what I would look at too is a BOT, but unfortunately, I am not so sure that we have any services or company that would be able to create BOT for arbitrage. I know of trading BOT, Gambling BOT but never heard of arbitrage.