hello guys long time, howmuch do 3 letter names go for atm i remember selling my 2 letter for about 200m rs3 gp way before osrs existed lol so are 3 letter names even rare now?

 

2 letters are going for 2b+ osrs equals around 20b rs3 nowadays. Really depends on combination.
Same goes for 3 letters, a random one with just letters might have some good value if it has meaning to it.
If you want some more specific guidance feel free to ask in dms.