Those prices are pretty close to The Acaeum valuations.
Item Rarity Fair Good VGood Fine VFine NMint
Original D&D Set (white box, 5th prt) 3 89 161 214 268 321 357
Chainmail (TSR, 3rd Edition) 3 30 54 72 91 109 121
Greyhawk: Supplement I (2nd-12th prt) 3 14 26 34 43 52 57
Blackmoor: Supplement II (2nd-9th prt) 3 15 27 36 45 54 60
Eldritch Wizardry: Supplement III (2nd-9th prt) 3 14 26 34 43 52 57
Gods, Demi-Gods, & Heroes: Supp IV (2nd-8th prt) 3 13 23 30 38 45 50
Swords & Spells (2nd-6th prt) 3 12 22 30 37 45 50
Based on these valuations, and your pictures I would value them as follows:
Original D&D Set (white box, 5th prt) 321
Chainmail (TSR, 3rd Edition) 150 (higher than the current $109 valuation because it is a first print)
Greyhawk: Supplement I (2nd-12th prt) 52
Blackmoor: Supplement II (2nd-9th prt) 54
Eldritch Wizardry: Supplement III (2nd-9th prt) 52
Gods, Demi-Gods, & Heroes: Supp IV (2nd-8th prt) 70 (
FN, but autographed)
Swords & Spells (2nd-6th prt) 45
Total value at auction: $744, give or take. Sale price could vary, as Thunderdave mentioned, depending on where they are listed, whether you do a higher BIN, and how badly someone wants them. The autographed Gods, Demi-Gods, & Heroes could go for more too, as autographed items are a bit of a wildcard, similar to
SW.
Just so you are aware, The Acaeum valuations are based on eBay, convention, and most recently, some Facebook auction sales, not private or straight sales, which can go for much higher, or sometimes lower prices.
The valuations are based on historical sales, thus they are tempered by past valuations. This evens out short-term fluctuations in prices, which are trending higher for most items at the present time.
