When was it appraised at $163K ?
An appraisal is only good for a limited time.
It may not be a matter of you settling for a $30K discount. It may be that your home is worth less NOW than when it was appraised. OTOH, it could be worth the same or more.
As far as finding comps, you may have to go further away, and/or use homes that are not really good matches and make adjustments to compensate for the differences.
Have the Realtors told you the addresses and specifics for the properties they are using to come up with their values? Because there is a pretty wide range of suggested list prices, I would suggest talking to more Realtors.
Don't go with the Realtor that suggest the highest price simply because they suggested the highest price.
Don't go with the Realtor that charges the least commission simply because they charge the least commission.
Find the one that is worth what they charge and knows the area, has the comps to back up their suggested list price.
Best of luck and good wishes for a speedy sale!