Retail broker looking for a place with reliable investment sales comps
Does anyone here have experience using CompStak or one of the other comp database services? Their website advertises 30,000+ CRE brokers all pooling and verifying info, which in theory would be an excellent resource. My concern would be paying for/relying on comps that are not truthful or inaccurate. 

Costar comps seem to be hit-or-miss in my market. I have appraiser contacts that I use when I have specific needs, and I keep my own records as I find comps. I would love to have this library of data just for general market intel assuming it is actually worth it! 

Furthermore, I am curious if an accurate comp library outside of appraisers' offices even exists. I am in a Midwest metro market. Thoughts? Thanks in advance for any insight.
[{"id": "icmcbpi", "text": "You might try Crexi Intelligence, they were selling us pretty hard. Its a newer service so they\u2019re giving discounts to build users.\n\nI\u2019m a buyer in the Midwest markets and we also have been wrestling with a good way to estimate asset value, aside from our broker\u2019s guidance. Interesting to hear your approach of asking appraisers. I imagine they have a better handle than our broker would\u2026 do you just shoot them a rent roll and T12 and they give you a back of the napkin price opinion?", "replies": [{"id": "icmmjqp", "text": "Typically I tell them what I am trying to price and ask for relevant comps that have sold in the last couple years. I am in the broker role so I rarely actually deal with the appraisers on full-fledged appraisals of my listings. So I don't really ask them for their opinion of value, but use what they give me to inform my own opinion. \n\nI will check it out! Thank you for the information. Have you been using CreXi Intelligence?", "replies": [], "depth": 2}], "depth": 1}, {"id": "icn7q42", "text": "Known fact that CoStar is terrible...especially with retail data.  Building out a proptech software company that sounds like it would be perfect.  Essentially it's allows for data aggregation / organization and data mining using sales / financing OMs, internal investment memos, appraisal etc...  You send us the data and we input it in crisp format at a low cost.  If you team up with some local professional you could easily build out a dynamic comp database.\n\nMade a post recently with some additional info....see below.  We're building it out now so could make some customization for you as one of the first customers!  Dm me if you're interested!\n\n&amp;#x200B;\n\nhttps://www.reddit.com/r/CommercialRealEstate/comments/v3m8v8/new\\_cre\\_proptech\\_company\\_were\\_launching\\_feedback/", "replies": [{"id": "icpurob", "text": "Thank you for that! Is it live or do you have a demo?", "replies": [], "depth": 2}], "depth": 1}, {"id": "ico3ire", "text": "RCA is the best but costar has some of the smaller deals sometimes. You might be in a nondisclosure state in which case good luck", "replies": [{"id": "icrermf", "text": "I am indeed in non-disclosure states... what is RCA though?", "replies": [{"id": "ie6t6j8", "text": "Real capital analytics, they keep a good repository of transaction data", "replies": [], "depth": 3}], "depth": 2}], "depth": 1}, {"id": "icoed0n", "text": "Crexi. CoStar is also a hit-or-miss in my market.", "replies": [], "depth": 1}, {"id": "icogwcm", "text": "Regular retail or NNN retail? With NNN you really only need term remaining and location (to an extent) as comps.", "replies": [{"id": "icrelgs", "text": "Specifically this time around I'm trying to find past NNN investment sales comps. I do leasing too though, so really any retail NNN lease comp is helpful for market intel as well.", "replies": [], "depth": 2}], "depth": 1}, {"id": "id9ahyc", "text": "At a large RE brokerage/appraisal firm they always pushed developing contracts.  So I\u2019d just call some appraiser at CBRE, C&amp;W or NGKF or Colliers say hey looking for comps, be sure to offer reciprocal info.", "replies": [], "depth": 1}]