State costs vary, but more or less should be +/- $750-1000 to get obtain your NMLS mortgage license (with courses) and most states permit dual licensing in which brokers can be legally compensated on both sides of a transaction.I'd be very cautious about performing dual capacities in any single transaction for two reasons: 1. 

To qualify as a real estate professional, a taxpayer must meet both of the following criteria:Taxpayers perform more than 50% of services in real property trades or businesses in which they materially participate.

(vii) would seem to indicate that you'd be acting as an unlicensed broker.(1) "Broker":(A) means a person who, in exchange for a commission or other valuable consideration or with the expectation of receiving a commission or other valuable consideration, performs for another person one of the following acts:(i) sells, exchanges, purchases, or leases real estate;(ii) offers to sell, exchange, purchase, or lease real estate;(iii) negotiates or attempts to negotiate the listing, sale, exchange, purchase, or lease of real estate;(iv) lists or offers, attempts, or agrees to list real estate for sale, lease, or exchange;(v) auctions or offers, attempts, or agrees to auction real estate;(vi) deals in options on real estate, including a lease to purchase or buying, selling, or offering to buy or sell options on real estate;(vii) aids or offers or attempts to aid in locating or obtaining real estate for purchase or lease;(viii) procures or assists in procuring a prospect to effect the sale, exchange, or lease of real estate;(ix) procures or assists in procuring property to effect the sale, exchange, or lease of real estate;(x) controls the acceptance or deposit of rent from a resident of a single-family residential real property unit;(xi) provides a written analysis, opinion, or conclusion relating to the estimated price of real property if the analysis, opinion, or conclusion:(a) is not referred to as an appraisal;(b) is provided in the ordinary course of the person's business; and(c) is related to the actual or potential management, acquisition, disposition, or encumbrance of an interest in real property; or(xii) advises or offers advice to an owner of real estate concerning the negotiation or completion of a short sale; and

Wondering if anyone has had success with it.

The average annual appreciation rate is projected to be closer to 1.5% over the next 10 years, considering its recent performance and overall market outlook.

@Tom SaharThere are always deals to be found, but the effectiveness of your marketing techniques determines your success rate.

It's up to the individual accredited investor to perform research and make an informed decision.   

Memo 1982-51), where the taxpayer successfully argued against the property tax “assessed value” allocation.

Here's to your success!

When they have a lot to lose, they will perform much better.