It's very hard for me to suggest a price for the lot - consider though, that each of those Suntour components would go for 20-30 a pop on eBay, and there are a lot of folks who would love an Italian framed-Univega, so maybe a hundred or so for that. I have no idea what they ask for Campy or Look pedals (except that it's always too high for my tastes.)

IMO, the BEST thing to do is to ask the seller what he wants for the lot - That way he will get what he wants, and you may get a bargain - one that will constitute that "minimal investment" and be far less than the sum of the individual parts.