Kineses one of the most promising fintek companies appears to be somewhat illiquid.  The velocity token kvt doesn't appear to trade anywhere and the current prices in the app are the following.

53.      56.60.     kau/usd
15.90 17.55       kag.usd
8100 n/a.           btc/usd
170 215             eth/usd

In the app itself there does not appear to be any way to set up limit orders.  Spot silver right now is 17.15 so it does not appear to be an unrealistic price to buy silver it's the selling price that seems incrediblely low.  It seems very strange that Bitcoin is currently unavailable to purchase.  The  debit card is a little bit of a tough sell with the current spread that is being offered.  Keep in mind they are still rolling out the debit card so it could work differently in the future.  If you want to see it for yourself I have the link Here