might not be the fast route (although maybe you're ok with that, lol), but I feel like that's something you might be able to find at antique places. Obviously it would take some hunting and work, but would probably save you some $$ (not that antiques are cheap, but you definitely can find some deals).
This. Do IKEA, add molding, change handles, antique/paint. I've seen some really amazing "built ins" w/ IKEA shelves and crown molding.
This exactly!
The lidingo (kitchen actually) looks very similar. (A lot of people don't think to look through the modular kitchen cabinetry as additional options for bookcase shelving.
My personal favorite is the Liatorp, they actually look pretty nice in person. They don't look plastic/melamine at all. It even has the vertical board pattern look on the backstop. Upgrade the hardware and you'll have a similar look for a lot less.
Have you left your info with any furniture consignment stores? There are a few in seattle on western that would have this kind of stuff. Usually its in really good condition still.
Best blog for DIY furniture refinishing/painting info. I adore Lindsay!
I'm in the process of repainting one of those ugly oak-finish bookcases and it's been a bit of a pain, but mostly because our hot weather last weekend was too hot and kept drying my paint too fast. Also, doing insanely vibrant bright colors (like the Tango Tangerine shade I'm doing) takes several coats, at least 1-2 more than most colors. I'm also too lazy to want to do the whole sanding appropriately. But look through Lindsay, she'll give you a lot of info.
Here's someone who converted those cheaper Billy Bookcases into fantastic looking "built-ins". She has a pretty nice write-up giving decent details on how they did it.
Regarding moulding - you can go to McLendon's or your Fix-it store of choice and find one that you like. If you go with your (perfected) measurements all ready, you can something cheap like 50 cents per cut and have them cut it all down for you. You will just need to purchase primer and the paint you want (plus whatever brushes, rollers, etc) and screws (hope you have a drill?). If you want to get REALLY fancy, you can buy a little can of wood filler so that after screwing the molding in place, you can fill in over the screws and then paint. (But then you won't be able to ever remove the bookcases without demolishing.
When you go to Ikea, go talk to the kitchen people. They will know if you could possibly buy some of the kitchen doors to put on the bottom of the Hemnes to cut those cupboards. (The Lidingo doors have the same style as the PB)