I have three 91/30 barreled receivers that a bought a while ago. I have since bought a compete 91/30 and I am planning on selling two of these. I will keep one to turn into sporterized rifle.

I have a 1925 Tula, counter bored; 1933 Tula, counter bored; and a 1943 Ishevsk, not counter bored. All rifles have strong rifling with lite frost, and minor finish wear.

I am curious on what the actual worth of these are. I've seen them selling on gunbroker for 30 to 40 dollars a piece. Any info would be appreciated.

$30 might be close.  It will cost more to buy the rest of the parts than it would to buy a new rifle.

A decent stock and handguard would probably cost close to $45 then add in the cost of rings and springs for a total of at least $60.  A complete 91/30 can be found for less tjhan $100.  Unless I already had a stock or planned to put one in an ATI stock I wouldn't give more than $25 for one.