I'm not even sure, nor do I want to know. I know I've spent a pretty penny or more on all of the DTIFC releases and singles that I got 2nd-hand on eBay.
I bought all the studio albums, live albums, one EP, one compilation, live DVDs and BRs, 3 deluxe special editions of studio albums, a few deluxe special edition live albums, all of the YJR stuff (including the LTE 2008 box set), a couple t-shirts, a poster, and other odds-and-ends.
I suspect it'd be close to $2000 if not over. I mean, between the deluxe editions of BC&SL, ADTOE, DT12 and LALP, that's about $500 right there, and I'd say I've spent that much on the DTIFC releases, so I'm already over $1000. Another $600+ for YRJ stuff, then we're at $1600 or more. Throw in the retail releases for another $300 so we're already at about $2000.
Let's just say $2200-2500.
-Marc.