I definitely agree with you, Scuromondo.
OTOH I certainly have been (almost) scammed buying stuff that really wasn't as described, nor even close to it. Best descriptions I've seen are at Stretta Music (no financial interest) and worst at some USA online sellers. Actually I'm trying to get a refund for a tunebook whose content is not at all related with its sales description, but I feel I will need to use the PayPal refund/scam system because seller is deaf.
And if a tunebook pleases me, I do purchase the printed edition, if available. Lots of sheet music published in the 1950's and 1960's just aren't available anymore: i.e. old Reba Productions, Paul Beuscher and Schott Music tunebooks, not out of copyright but out of print and almost unavailable. Today I've purchased a 1930 copy of the german tunebook "Der Zupfgeigenhansl" (first edition 1908) which I already have in pdf (from Universitäts- und Landesbibliothek Düsseldorf), and more recent reprints are also available but I like to have an original one. Lots of my older tunebooks were found, one by one, at abebooks.com or similar sites. Of course, ymmv, and I understand your comment.