argonaft, and then we tried with colleagues to clarify your question about "investment component." Opinions are different, and that is valuable.
In summary, you can answer something like this - if you bought now, then sell their "component" has already received. And his task was to persuade you to at least a component, at least for a trait in a mortar - only the transaction took place.
Did you get that component, deciding to continue to sell the painting - is another question.
Most likely, you will not find yourself in such a deft seller.
So take the advice.
Buy something like that.
  Because then it might like, and someone else. And you can actually sell - taking into account inflation, changes course and the notorious investment component.:)
   So you the best answer to the question "who invest in" (quote, trying not to harm the reputation of the author) --
"At the same time, Aivazovsky and Shishkin, or what? Or Vasnetsov? Are indeed from my point of view of mediocre artists"
A lot of people for such an assessment of Russian artists guru-expert thanked.
So do not waste your money, do not buy the above. :):):)