First one is a Japanese white pine. Second two are Japanese black pines. Last one is a juniper of some type (San Jose?).
The first three are in landscape pots. Last one is in a bonsai pot, but it appears to be an inexpensive Chinese pot (worth perhaps $30-$40). A close-up of the pot would help ID it.
All four trees are in desperate need of care. In the case of the first three trees (the pines) even missing one season may cause problems. From the looks of the trees, it appears they have not been maintained for over a year.
If I had to rank order them in terms of value, I would say tree #3, tree #2, tree #1, tree #4 (from highest to lowest) but that is very subjective, given the video and the inability to view them in person. You might consider placing them next to each other and taking a photo with a couple of soda cans to help show relative scale.
You will get the highest value for them at a bonsai auction at a convention or show, or alternatively, at a bonsai club event. That will give you the best estimate of their "true" value. You will never know if you priced them right if you sell to a single buyer... maybe yes, maybe no. Auctions let the market determine the value. They are relatively big trees so I doubt you can ship them. If you DO decide to ship them, take them out of the pots first so you don't have to pay to ship the pots. It will be tough to get top dollar for them given their current condition. However, we're talking $ hundreds, and not $ thousands
Alternatively, you can find a GOOD bonsai nursery, and pay to have the trees worked. Repotted, pruned and wired by someone who knows what they are doing, and the trees would easily fetch 2x what they would in their current condition. These appear to be southern California trees. If so, there are some good clubs and nurseries in the area.