CSGO Trading bots not working

Hey, thanks to @Laziz I found out about trading bot but sadly they don't work for me.
He somehow did manage to swap skins with one of them yesterday, but now I want to swap they stopped working.
It appears they stop working alot of times, according to the comments atleast.
Anyone know why?

Take for example this bot: Steam Community :: [Tradebot] Elma [Send any Offer]

I offered this:


And it refuses, anyone know why? According to the Steam prices he would make profit because of that atleast. Would really love to get those items though..

 

It might not be using steam community market for its prices. Steamanalyst and there's another site that's normally popular as it uses the average for the last 7 (or 30?) day sales on the market. That way prices can't be manipulated as heavily.

Or maybe it wasn't making enough profit.

Edit:
- the bot uses the steam market price and averages it over the last hours
- only items that are sold more than 20 times a day will always be accepted

- souvenir and stattrak skins are worth 95% of their price
- cases 95%
- cheap skins and cases under 1$ are undervalued