if XRP will breake 2200satoshi support it's over. Majority of those who are dumping this coin right now are early adopters or those close to the project with access to the stash.

There is no option that real investors are dumping this coin. Comparing to the other top 10 coins, BTC/XRP exchange rates XRP is currently dead cheap.

Your USD purchases won't save this coin because what really matters is BTC/XRP exchange rates unless XRP will surpass the global BTC capitalisation becoming the new crypto leader which will never happen.