I have a set of 77 stainless Ludwig drums- a Floor tom and a mount tom. They are in good condition- valuable?

They are in good condition with very little surface rust and wear. Their SN's are about 100 apart- so they've stayed together all of these years. Can anyone give me a rough estimate of their worth or know where I could get this information? I haven't had much luck surfing the internet for drum value websites... Thanks!