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In real time?

"What's the cost?"
"X.033"
Roll
"Damn, it's now worth X.032" <-- this actually happens with crypto.

Or someone could wind up with 2 for one deal.

What would be the mechanic for that?

Coin Marketplace

STEEM 0.06
TRX 0.32
JST 0.078
BTC 72420.12
ETH 2225.99
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SBD 0.49