Any idea how much these Omega's are worth?

I would take good pictures and list them all no reserve $1 starting price on eBay, theres a market for all of them ranging from several hundred to over a thousand and you'll get market value on the bay for them.

An interesting, slightly off beat collection.
They do look worn but appreciated
All look as though they need attention, but unless you are keeping them, not worth the expense.
Collectors prefer to buy in this state, from the owners family than if they were presented having been prepared for sale. We like to control what happens!

Good photos and honest provenance will make sure you get the best price for them.

None are worth thousands, but they all have attraction.

Best of luck