What would the value be for this collection?

[gawaintheknight]

I just got an e-mail from someone wanting to sell this collection:

All cards are in plastic sheets and boxes. Earlier sets have some cards with more wear since collected by an 11 year old in the 50’s.

1950 Bowman baseball complete set (most are worn)
1950 Bowman football complete set
1951 Bowman baseball complete set #1 creased and worn
1951 Bowman football complete set
1952 Bowman baseball complete set (plus 1982 phantom art work add ons)
1952 Bowman football complete set
1952 Topps #1-310 ….sorry, no #311
1952 Bowman US Presidents complete set
1953 Bowman baseball complete set (color) #1 in roughest shape
1953 Bowman baseball complete set (b & w) #64 with crease
1953 Topps baseball complete set (includes Mantel)
1954 Bowman baseball complete set (includes Mantel and Williams #66 & Piersall #66)
1954 Topps baseball complete set
1953 Glendale premium meats Detroit Tigers 7 cards
1953 Redman baseball miscellaneous (no bottom tabs)
1954 Red Heart Dog Food 9 cards (includes Mantel)
1954 Bowman football complete set
1955 Bowman football complete set
1956 Topps baseball complete set ( I believe)
1957 Topps baseball missing #2,14,16,29,45,49,50,84,86,200,220,235,264,267,268 ,270,271,279,288,294,302,306,324,327,
328,331,335,339,342,343,347,350,351,359,361,389,39 4
1957 Topps football complete set
1958 Topps football complete set
1958 Topps baseball complete set
1959 Topps/Bubbles “You’ll die laughing” miscellaneous
1960 Fleer baseball miscellaneous
1972 Topps hockey not complete set
1974 Topps baseball complete set
1975 Topps baseball mini cards complete set
1978 Topps baseball and football incomplete sets
1978 & 1979 Topps hockey almost complete sets
1982 Kmart/Topps MVP complete set
1982 Donruss Diamod Kings complete set
1983 Donruss Hall of Fame heroes complete set
1984 Donruss Grand Champions jumbo cards complete set
1985 Donruss Diamod Kings complete set

This is not the kind of thing I'm normally offered (well, I do get those 82 Kmart sets sometimes) and I don't know what a good price would be. Nor do I know if that '52 Bowman set is small or large. I think the book value is about $150K for the sets. And obviously condition is a factor. But what would be a fair price, assuming maybe VG condition?

Thanks for any help, and if I end up buying it I'll let you all know. Also I'll be offering that Kmart set for sale here, for sure.

Ted