I bought two NOS 37-39 drums last year (a front and a rear) for $150. 36 front drums are one year only with a longer snout, so that makes them a little more rare.
Wide 5 rims are the same (or will interchange) 36 - 39. I usually don't pay more than $25 a rim for them. I bought a set of 4 a few weeks ago for $100. I bought a set four years ago with front drums and rear backing plates for $125... Your milage may vary.
I'd say those 36 drums (if they're within spec) are going to be worth a bunch more than the rims are, though if you're not in a rush, the right buyer will be out there...