StrategtQuant goes for $990 and the developer in Czech Republic offers a demo and all extra help.
Price Action Lab (DLPAL) offer a free trial except code as I remember. UI is little outdated but results are usually good.
Same with Adaptrade the developer offers demo identical to full...
Three things to calculate: leverage, risk per trade and needed capital. Here is a good reference http://bit.ly/2rmkcxF
I use max leverage of 5:1 but 90% of the time 1:1.
Data from exchanges show that when real sellers come in prices fall sharply. Soon chaos. $100 to $75M, lol, unless it was stolen...:)
Something smells bad.