The problem with figures is the market, i've seen some on ebay for well over £50 a piece, yet you can see the same things in shops marked up for less, but obviously the risk with ebay is they might go undetected. But it is generally regarded as one of the best places for selling them due to the huge scale of the market.
I can't value them for you as i'm not an expert on them, and I wouldn't like to give inaccurate estimates. Of course figures that are still in original packaging and not opened or played with will hold greater value, it is often said by collectors that just opening the packaging can decrease the value by 50%.
Collectors will rate condition of a C scale of 1 to 10, 10 being Mint. You have Mint in Box and Mint in Sealed Box also.
For Star Wars there are also things such as Original Trilogy, Special Edition etc. I'm sure there are sites out there to help with it or maybe people can recommend places to check them, i'd look on ebay and see if what you have is around on there and what it's going for on average.
In regards to retro consoles, they're not really of much value, I picked up a NES not too long back due to my old one dying and it was still pretty cheap, and the games go for 99p + shipping on ebay, I know N64's etc still pop up in Gamestation and on ebay - can check both of them for estimates prices I guess.
Anime collectables to the right person can go for OTT prices, you want to check ebay and various sites such as ForbiddenPlanet who might still be selling them to get a rough estimate.
Or you can hope someone on here has more knowledge than I do on the matter, figures are not really my area but maybe what i've said can be of some help