seperately these 2 words can be understood the same meaning,not it doesn't work all the time.U should put it in the particular condition to choose the proper one.Generally,"suo3 you3 de" is used as an adjective,while"yi2 qie4" is more used as a noun.Here in this sentence"here, each computer is too expensive",when translated into Chinese,it can be"zhe3 li3 suo3 you3 de dian4 nao3 dou1 hen3(or tai4) gui4 le."Although there's no"dou1(=all ) exsits in the original phrase,but you put this word in your tranlated one,it makes the whole phrase more smooth and coherent.

yes

yeah,exactly. 所有的东西都归我！一切都是我的，笑