Record collection sales addvice

You could catalog your collection on discogs and then potential buyers can both check it out and see values directly. It will also allow you to judge offers. The discogs app is very easy to use (direct barcode scanning for example). Clearly it will take some time but less than I think any other method

Good idea I already have some of my collection cataloged there ( ones with codes most are older though) good idea cheers.

You have to come to the realization that if you sell as a collection, you will not get anywhere near what you think they are worth. 

I would want to know collection composition by genre (20% classical; 30% jazz etc) and the overall condition of the collection as a whole (mostly NM/NM?). What do you consider the 100 blockbusters in the collection, if any? Regarding those 100, I would want everything you listed above--details and pictures. Then a comparison of the rest of the collection to those 100 (ie, most of my collection is similar to these 100, or 50% of my collection is like these 100, or nothing else is close to these 100). Once you have that info, IMO you have provided enough information for someone who is serious to determine whether your collection is interesting enough to wade through your 2000 records. @folkfreak's discogs idea is a great one--but the values will get distorted due to the point @tpreaves makes above. If you have a great collection, you might garner a nice check, but it likely will pale in comparison to what you invested in the collection one record at a time.
I hope it goes well for you.
Peace
Al  

Given what I buy, I need to know which specific pressing, mastering, plant, etc. Perhaps this is irrelevant to some genres and types of records, but there is a considerable difference in value among different pressings of older rock, blues, prog, jazz, and the like. 
The Discogs system is set up to identify the specific pressing if you go to the trouble of finding it- deeper on some genres than others. I don't know if they modernized their export feature- as I recall it was somewhat limited. I would check that--the export function and its implications- before loading info into the Discogs "Collection function.

I would break your 2000 collection down into more manageable lot sizes thus appealing to a larger market.  You can sort them by genre etc.  Not everyone is in the market for 2000 albums, but many may take a chance on 500 albums of a specific genre. 

As one of the few idiots that still buys large intact collections(usually classical) the amount you hope to get per record is quite optimistic, unless you have mostly highly desirable titles and they are in great shape. Might be hard for a collector to pay that kind of cash to get what they want and then spend the time to sell what they don't and most dealers are looking to at least get 3 or 4 times their investment. But I do hope you have an unusually rich collection and can come to terms with apotential buyer

I am very good friends with one of the largest used record dealers in North Florida.
He regularly buys huge collections (1000 plus).
Honestly you would be heartbroken at the prices he pays, he is a businessman, he wants to make a living.
I think breaking down and selling in more maneagle chunks is an excellent idea, heck maybe even searching ebay and listing some rarer birds there singly.
Good luck with whatever you decide.

i would not sell your raresest ones first if you do not have a history of selling records on ebay or discogs. i would sell some mid level lps first at little under the going rate.