I had a free 12 hour trial on this and really liked everything offered by this site and service.
Real time updates, many exchanges and great toold for checking across multiple exchanges. I like how this project is in continual development and their is a determination to protect and offer the best services to the loyal paying customers. Free registration so you can sign up and have a look about free of charge. when you want / are ready to arbitrage and make some money you can sign up with a sliding scale for cost and number of months.
Friendly and helpful support and devs. I hope to see this around for many years to come and wish you all the best

Fuzzybear