Hi Sergey,
I too have had system problems with Newark online ordering in the past - they are not my favorite, but sometimes low-cost items appear that I can use (and these prices appear in octopart.com search engine, so that is how I found this item). Also, sometimes when I have ordered a low-cost item and went back to order more a few days later, the price had increased.
Before giving up, maybe try other browser on your computer? I tried with other browser and was able to reach "check out as guest" without unexpected price change.
Good luck!
Dave
