Why not trade on Binance? it's supporting all of those coins that you want to buy. You only have to deposit one time for you to buy at least one or all of those coins that you need. You'll have to pay the same fee when you send to the exchange or to someone you'll trade with.
https://www.binance.com/en/trade/XRP_BTC?type=spot
https://www.binance.com/en/trade/BNB_BTC?type=spot
https://www.binance.com/en/trade/DOGE_BTC?type=spot
https://www.binance.com/en/trade/XRP_BTC?type=spot
https://www.binance.com/en/trade/BNB_BTC?type=spot
https://www.binance.com/en/trade/DOGE_BTC?type=spot
Cause he is a scammer
. 