We live in an era of idolatry. The association of a drum brand with a certain drummer's use of them is what most people are intersted in. Hardly anyone would know about Ludwig drums, had Ringo not played them. The company , probably would have gone bankrupt----they almost did ,anyway. It isn't the drums themselves , that is of interest, that comes along later----it is the association with the drummer and unfortunately, in the broader scheme of things, drums are not really a solo instrument and drummers, with the exception of very few, are pretty low on the musician food chain. As, musical instruments go, if you are planning on making serious money from your collection of drums, you've chosen the wrong instrument. Yes, there are drum solos but there are very few venues, where the selling point of the venue is , a drum or percussion soloist. Evelyn Glennie is the first percussion soloist, in the western world. There have been 100's of violin soloists and hundreds of soloists on other instruments. The Dolphin Stradivarius, that Jascha Heifetz ,played on is in good measure ,worth millions of dollars because Jascha Heifetz , played on it, not because it is a better violin than others. In blind listenings, Strads, routinely are graded lower by players and listeners alike, than instruments worth a fraction of their value.
As long as idolatry, is the measure of our values, drums aren't going to really jump in value----oh, they will increase here and there, and I'm sure Ringo's snare drum will eventually sell for a bucket load and any that even resemble it but a lot of that is sheer marketing. However, you can make more money on one astute violin purchase than a whole basement full of drums.
