Are there any websites out there that give you the value of front stuffers? I have a Thompson Center Seneca in .36 cal. I am thinking of selling. Need an approximate value.

You could check on gunbroker to see what they are going for.

There are a few you can pay for, $4.00 a single use or so much a week, month, or year. Have never tried any of them, always afraid they won't have the gun I'm selling on their list, and I don't sell enough guns to buy the Blue book of guns. I bought my brother a 45cal. Seneca back in 1981 I think I paid $225.00 for it then, the 36cal. are harder to come by than the 45cal. I wouldn't take less $400.00 for it. Hope this helps a little.