What was the most expensive record that you ever bought ?

Funny this subject came up. I have been on strike for the last 9 weeks and it has given me some time to clean and catalog my collection I'm not done yet but have been shocked as to what I have come up with thus far.  So far, the highest value for a single record has been Dido Quiex SV-P pressing median price $481.00, three for sale from $1,612.00. I paid between 20 and 30 bucks. The highest box is the Mo Fi Beatles Collection median price $825.00. I got that a few years back with the Rolling Stone Mo Fi box and the Sinatra Box for $900.00. But my prize is Alice in Chains Jar of Flies/ SAP autographed copy going for a median price of 300 buck, without the signatures. Who knew my record collection would do better than my IRA?

@hysteve - I'm sure it sounds great, but that must have been the one reviewer who didn't think the QRP double-45 sounded best. Different setups, different systems, etc, it's all good, but personally I have yet to hear a double-45 that didn't sound even better than a great quality 33 1/3.

I bought that version of 'Aja' for the $150 list price (the most expensive single album I ever bought), and yeah, that's very amazing, too. I've also got a perfect condition promo copy of 'Aja' from when it first came out; that sounds excellent, but doesn't come close to the QRP. 

I don't remember the most expensive I bought;  probably some of the MFSL from the early 2000s.  But the most expensive I sold was one of those--a sealed, limited edition (fairly low number) copy of Pink Floyd's Meddle for $1100.

The only thing that's sucks is you spend big money on an unopened lp and one day you sell it for even bigger money.To find out it's a different copy and not the one on the cover...  So I don't buy sealed copies ,buyer  beware there is fraud everywhere......