100$ of deposit is definitely not enough for crypto arbitrage.

First of all, you gonna need to buy the access for a decent arbitrage bot because beside the price difference you also need to know the market depth just to know the amount or coins you can buy. It is hard to do this completely manually since the arbitrage situation can last only for 15-20 minutes.
You need to have enough deposit to cover the exchange withdrawal fees. With 100$ deposit  these fees will kill the entire profit.
And of course a decent arbitrage bot can easily cost over 1000$ for monthly subscription.