Any golfers..need help determining value

I've got a set of Wilson System 45 golf clubs that I want to sell, but I have no clue what they're worth, especially after receiving an offer of $40 for just one club.

They all look like they've hardly been used. Grips are all good. There's a few mismatched clubs...a Calloway Big Bertha 6 iron, that looks almost new, a Pinseeker driver (for some reason says 7 on it but it's not an iron), and a Beast Ti 460 driver, that aside from a few dings in the paint on top, looks to be in good condition.

I don't have a bag for them, and no digital camera, so pics are not available. Can anyone give me an idea of what I should be asking for them?

Thanks!