Please one coin at a time with good photos and weight and diameter. As a general rule:
- unreadable coins: maybe 1$ each
- 3rd & 4th century low grade with the ruler being readable: 3-5$
And it goes up from there.
After taking a quick look I can say a lot of your coins will fall into one of the two aforementioned categories.
You correctly identified which will most likely be the most valuable coins in the lot and took separate photos of them with the most valuable of those being the Postumus denarius and the Gordian III sestertius. There's also an interesting Domitianus denarius in there which is probably the oldest coin in the lot.
Take a look at how Pcoetzee5 opened his identification topic to get a better idea on how it should be done: https://en.numista.com/forum/topic151930.html
I collect and deal in ancient Roman coin. In case you're looking for affordable ancient coins or need any help with the coins you already have send me a message.