I'd stick the joblot on ebay as its a bit crazy on there at the moment with prices going through the roof thanks to the new film so you could get £300+ even 8)
and on the yak, its the paint rubbed hands and shoes that lose it value, saw one in smiliar condition to yours go for £80 the other day, mint with weapon these are hitting £150+ now.
Worth noting your Ewoks have the wrong accessories for the figures. The Romba has a Chief Chirpa hood on and the Logray has a Teebo hood and quiver. You might be better selling the accessories separately.
As others have alluded to most of us that don't have them would dearly love to have our childhood collections back but if you're not a collector stick them on ebay and let them fly. Maybe keep one or two of your favourites?