Ernest money for duplex?

[Sean Harris]

Just put an offer on a duplex in Ohio and my realtor asked if I wanted to add ernest money. Is that normal on a deal under 200k? Or does my bid plus ernest money make a more solid bid? Also does the ernest money get wrapped into the bid? Say I offer 180k, would that really mean 170k plus the 10k ernest money. Confused and need help, thanks