Not really sure how it works in DR, I know that Notary Public deal with real estate and they are usually lawyers. Not sure how valuations work, etc...
For Goatfarmnga: if you want to sell without a realtor's commission (you just have to pay the buyer's commission, in NY it's around 2.5% - 3.00 %) you should look at getonmls.com. For a $495 fee you get your property listed on the MLS, it gets national exposure and you cut out the realtor that isn't doing you any good.
I've used it and am very happy with the results.