Simple Question ^^. Do you know if i will find more normal Jedi Robes, or will be able to buy some?

Thanks in advance,
greetings ther

Nope, you only get the one set.

you will get more by looting dead Dark Jedi and certain Jedi corpses along the way

^^^^
Nope. There is only only place you can get the Jedi Robe and that is from Zhar after completing the 3rd part of your training. You will be able to get Jedi Knight Robes and Jedi Master Robes throughout the game, however this is the only place you will get the "normal Jedi Robe" that the OP inquired about.

If you have the PC version and want to be able to buy all kinds of Jedi robes in K1, I have a mod that allows that at many different merchants:

http://knightsoftheoldrepublic.filefront.com/file/Enhanced_Merchants_for_K1;73213)

There are lots of UTI files for the Jedi robes. I believe four per classification - Jedi, Jedi Knight, and Jedi Master. Plus one for the Qel Droma robes. They don't all appear in-game, though, unfortunately (it's not really THAT big a deal, they all look the same anyway, but if you're using a mod like my K1 Robes mod (http://knightsoftheoldrepublic.filefront.com/file/90SKs_K1_Robes;86155) it's a little inconvenient)