Appearently you are, as stated, selling this home yourself (DIY) and are not using an attorney or title company. These can see signifcant issues, in all dimensions, regarding short and long term liablity....To THEM.
I essense you are asking for a "FEE TO PLACE A PURCHASE OFFER." Now that is a novel approach. If the escrow is $5,000, your are imposing a $2,500 submission fee. Wow!
Sure, go for it. You just might find an unrpresented buyer who is asleep at the wheel.
If, however, their brother, mother or son-in-law is an attorney, you may wake some morning in a house you can not sell at all.