Making offers

[Vincent Mcarthur]

I have made several offers (more like 15) from the MLS that have not been accepted. My goal is to fix/flip or wholesale. I am putting in the offers 65-70% below market value, but nothing accepted. Should I use a different formula if I going to wholesale a property? Should I continue using the 65-70% and just submit more offers. I am located in south florida, I have been looking at handyman specials and REO on the mls.