Thanks for your answer. I realize that different exchanges provide different prices. Coinmarketcap provides a slightly different price to Binance! Anyway, at the end of the day I found the bottom of the range and it seems to be working out for me.
I was surprise that there was a difference at all.
If you want accurate results, always look at the charts or trade history in that particular exchange at the time the order was filled, otherwise using the party coin price ranking sites like coinmarketcap won't give you an accurate indication of the price.