Better deal with cash?

[Jack K.]

I'm considering a strategy that would utilize a line of credit (say $75k) to purchase properties in the $30k-$75k range. Once purchased, I would utilize the LOC to update the property and then advertise for rental. Once rented, I would get a commercial mortgage on the property and pay off the LOC. And then repeat the process over again. And again:-). My question is what discount I can (generally) expect to get by making a cash purchase? I've heard 15-20% off list but I would like to validate those figures with the BP community. Thoughts?