Determining Closing Costs

[Ernes Sahic]

I made an offer on a property today and gave them a all in price including closing cost I am willing to pay. The wholesaler came back with two options. 

OPTION 1:I pay buyer closing cost (He said estimated $500) and they pay seller closing cost. 

OPTION 2: They would take $500 less than my original all in offer and I pay all closing cost.

My Question is how are closing cost determined on investment properties?

Is there a difference in closing cost on a property selling for 100k vs one selling for 20k? 

Im purchasing this property cash fyi. Does that play a difference on closing costs?