Admittedly it's not fully complete as per the image would suggest but this seems to be nearest to having one and I hope that this post isn't removed because anything by the Coen Brothers is worth watching and owning, plus, it took time to put this list together too.

Blood Simple (1984) - £1.42 (Used) @ http://www.amazon.co.uk/gp/offer-listing/B00004W4H4 (Planet Games and Gadgets)

Crimewave (1985) - £8.60 (Used) @ http://www.amazon.co.uk/gp/offer-listing/B0009S4ER8 (Zoverstocks)

Spies Like Us (1985) - £3.53 (Used) @ http://www.amazon.co.uk/gp/offer-listing/B000FIH68G (OnlineMusicFilmsGames)

Raising Arizona (1987) - £1.69 (Used) @ http://store.musicmagpie.co.uk/products/raising-arizona-1987-dvd

Miller's Crossing (1990) - £1.59 (Used) @ http://store.musicmagpie.co.uk/products/miller-s-crossing-1990-dvd-1991

Barton Fink (1991) - £1.59 (Used) @ http://store.musicmagpie.co.uk/products/barton-fink-dvd-1991

The Hudsucker Proxy (1994) - £4.09 (New) @ http://www.zoom.co.uk/product/the_hudsucker_proxy_dvd

Fargo (1996) - £1.60 (Used) @ http://www.rakuten.co.uk/shop/zoverstocks/product/U0044004779821/

The Big Lebowski (1998) - £1.99 (Used) @ http://store.musicmagpie.co.uk/products/the-big-lebowski-dvd-1998

Down from the Mountain (2000) - £11.20 (Used) @ http://www.amazon.co.uk/gp/offer-listing/B00005QX9V (MediaHunter)

O Brother, Where Art Thou? (2000) - £1.59 (Used) @ http://store.musicmagpie.co.uk/products/o-brother-where-art-thou-dvd-2000-dvd

The Man Who Wasn't There (2001) - £2.19 (Used) @ http://store.musicmagpie.co.uk/products/the-man-who-wasn-t-there-2001-dvd

Bad Santa (2003) - £1.89 (Used) @ http://store.musicmagpie.co.uk/products/bad-santa-dvd-2003

Intolerable Cruelty (2003) - £1.59 (Used) @ http://store.musicmagpie.co.uk/products/intolerable-cruelty-dvd-2003

The Ladykillers (2004) - £1.59 (Used) @ http://store.musicmagpie.co.uk/products/the-ladykillers-dvd-2004

Romance & Cigarettes (2005) - £1.59 (Used) @ http://store.musicmagpie.co.uk/products/romance-and-cigarettes-dvd-2005

Paris, I Love You (2006) - Unavailable

No Country for Old Men (2007) - £1.59 (Used) @ http://store.musicmagpie.co.uk/products/no-country-for-old-men-dvd-2007

To Each His Own Cinema (2007) - Unavailable

Burn After Reading (2008) - £1.59 (Used) @ http://store.musicmagpie.co.uk/products/burn-after-reading-dvd-2008

A Serious Man (2009) - £1.50 (Used) @ http://www.amazon.co.uk/gp/offer-listing/B002ZRQB9U (ForgottenMedia)

True Grit (2010) - £1.69 (Used) @ http://www.amazon.co.uk/gp/offer-listing/B004BDOEYK (MassiveBooks)

Gambit (2012) - £1.50 (Used) @ http://www.amazon.co.uk/gp/offer-listing/B008OQ121S (Revival Books LTD)

Inside Llewyn Davis (2013) - £4.03 (Used) @ http://www.amazon.co.uk/gp/offer-listing/B00HS2P6KC (Zoverstocks)

Unbroken (2014) - £6.04 (Used) @ http://www.amazon.co.uk/gp/offer-listing/B00LY1YMY4 (WarehouseDirect UK)

Bridge of Spies (2015) - £9.99 (New Pre-Order for Prime Members) / £11.98 (New Pre-Order for Non-Prime Members) @ https://www.amazon.co.uk/gp/product/B01879BXBK

Hail, Caesar! (2016) - ETA 2016