I assumed we had struck a deal, as you asked for my address to look into shipping, but your recent post seems to suggest otherwise.
I offered a very fair price.
To answer your question about whats valuable, Let me go over it and others can confirm or call me a liar.
Your collection has no Premier Black Border cards (White Border Premier, even rares, have very little value. You can buy sealed boxes of WB - containing 36 packs each - for just $12 at Hills Wholesale Gaming. Someone can probably put an entire set together for less than $60 and have the fun of pulling them fresh from the packs!)
You DO have a fair amount of DS9... I will add, however, that many of the rares in those binders seems to have seen some play and the edges are looking rough. Hard to tell how extensive the damage is and which cards Id still need to replace. If this was a complete set in mint condition, it might fetch around $300 or so. Here is a COMPLETE set in mint condition on ebay for $320:
https://www.ebay.com/itm/STAR-TREK-CCG- ... Sw6rVe7LNP
Your Dominion set is missing like 4 cards (not counting the WB preview cards). A complete mint set sold recently for about $160:
https://www.ebay.com/itm/STAR-TREK-CCG- ... 7675.l2557 You DO have 1 of the preview cards, and wouldnt be hard to pick up the 4 missing. Its one of the reasons I offered the price that I did.
Your Rules of Acquisition, Mirror Mirror, and Trouble with Tribbles are pretty much worthless. TwT (mint) with the Ultra Rare McCoy (which I didnt see in your collection) is like $100 (about 60 without it), RoA is $50 mint and complete, and MM is $60 mint and complete WITH the Ultra Rare Spock (also didnt see in your collection). The Ultra Rare Spock sells for about $40 on his own. The fact is the UR cards are the only money cards in these sets and you dont have them. Outside of the UR cards, the sets STILL arent complete.
Voyager COMPLETE and MINT might fetch $350-450... Yours, however, isnt even close to complete, missing half of the bridge crew and lots of other rares. Its honestly missing the most expensive cards. You are missing Janeway, B'Ellona (Federation) Chakotay (both affiliations), Tuvok, Neelix (both Affiliations), Kes (Federation), Seven of Nine (both affiliations), U.S.S. Equinoix (Federation) and tons more. Tons of money will need to be spend to complete this set.
The Borg Mint and Complete WITH all alternate affiliations and the Ultra Rare Barclay (again you are missing) sells at less than $100:
https://www.ebay.com/itm/STAR-TREK-CCG- ... 7675.l2557 Barclay on his own will run about $30 and that still wouldnt complete your set. Its missing a LARGE number of the dual affiliations including EVERY version of the Borg kids (both Federation and Non-Aligned), No Orums, No Marikas, No Riley Fraziers. Your "collection" of this set is so incomplete I couldnt even begin to toss out a value on it.
The Motion Pictures is the most valuable of any cards you have in your collection. A complete Set can go for over $400. With the UR and all it can go $800 or more. That said, I counted about 20 R/R+ cards in your collection (out of 53 R/R+ cards) and again, you are missing the Ultra Rare Kirk. You are missing the regular rare Kirk. Missing Captain Spock, Captain Sulu, Commander Chekov, Commander Rand, Commander Uhura, Dr McCoy, Mr. Scott...
You have not even half of the rares in the set and none are the ones that give it it's high value.
The fact is your collection is NOT in mint (most cards might be, but many of the rares arent). Not a single set is complete. You are missing many of the key cards. Its impossible to put a value on incomplete sets because the missing cards can be the high $ cards (and in your case, you are missing a lot of the high $ cards).
Despite all of this, I made a substantial offer because this would have added a lot of missing cards to my own collection. In some cases completing a few sets. I also could have used the cards that I dont need for my collection to trade with others, helping them to complete theirs while filling in the final gaps. My offer was fair to you for what you have and I didnt lowball you at all. I was actually more generous than its worth... but I was counting on trading with other members to make up for it.
But I now withdraw my offer to you, as Im not going to be jerked around. You replied saying it was a fair offer and asked for my address to check shipping rates. Now here you are saying you have had multiple offers and want to do more research. Im sure SOMEONE will come along and buy your cards (or maybe not), but I wont be the one now. Good luck with your sale.