That depends. There are few variations of Israeli 98k rifles: Ex German, Czech post war and FN contract made rifles.
FN examples will be blued with the IDF crest on the receiver ring and generally cost a bit more. Ex German rifles will have peened eagles and most Czech examples have the lion crest on the receiver ring. Both German and Czech rifles are most often parkerized. Gew 98 and G24 receivers have also been encountered.
These rifles were re-barreled to 7.62 from 1956 to 1958 and were arsenal refinished right up to 1975 using beech stocks.
Here we have a FN rifle above (IDF crest) and ex nazi below (dou 41).
A nice Israeli will run you around $450-$550 with a nice FN being more than that. A decent one about $350-400ish