Many Roman aristocrats were passionate collectors and bought statues or books for their villas. From the top of my head I'm thinking of Cicero and Silius Italicus. Cicero asks his friend Atticus in many letters to buy certain objects of art or books for him, but I can't remember a certain passage right now. In epistle 3,7 Pliny the Younger gives a short characteristique of the poet Silius Italicus shortly after his death. In this epistle he tells us that Silius was an excessive collector who religiously worshipped Virgil:

" Erat φιλόκαλος usque ad emacitatis reprehensionem. [...] Multum ubique librorum, multum statuarum, multum imaginum, quas non habebat modo, verum etiam venerabatur, Vergilii ante omnes [...]" (Plin. ep. 3,7)

"He was a collector to such an extent as to be chargeable with a mania for buying. [...] He had everywhere a quantity of books and statues and busts, which he not only possessed but actually worshipped, that of Virgil above all others [...]" (transl. by John Delaware, London 1879)