Prices AP Archipenko

[operator]

Dear forum users! Help to understand please!
From Ukraine offers two sculptures Archipenko AP - If someone knows something about "the founder of Cubism" lay out ..

More about him now that he has found: http://nwor.narod.ru/x_arxipenko.htm
 
Appendix photo of two works (and an Egyptian lady combing her hair) and their accompanying documents.

Tell me please, who faced with expertise from the Ukraine, the most important thing as far as it is reliable and yet, why such "exorbitant" prices for these estimators Kiev?))

Egiptian_Appraisal2.jpg - estimated cost - 153 thousand dollars. A LadyApprisal2.jpg - azh 246 thousand! Why so expensive?

Because of the sculpture of the author on price indices ARTinvestment.RU prices seem to be less cost!?
http://artinvestment.ru/auctions/1284/works.html?wc=5