Easy there with that "We" stuff...;-)
I actually shoot up to 6-8 sheets on a key shot in order to "Dust Bracket" versus at most three frames of 120 on the same shot. Reason bieng is that I practice all the best methods of dust control that you could possibly find using a google search in a week and still have issues with dust on the film during the exposure, so LF has turned out to be *very* expensive for me at least in real world use.
And yes, you can find decent 4x5 enlargers for a song or even ones with a cold light head and a few lenses for $200-$300. Then you are good to go with a $100 Rodagon 150mm 5.6 for most print sizes. Add a clean Negaflat carrier and you might not need to spend $150-$200 on a glass carrier with anti newton glass....but then again, you just might.
As far as souping the film goes, there are a few ways to skin that cat, but they can have issues with consistency, needing full darkness, messy trays, sheets popping out of a Mod-54, getting raked over the coals for one of those Nikor tanks....or you are like me and value your time and pony up for a Jobo Expert Drum and roll it on a motor base or a full blown Jobo and just cut out the BS....
So yeah, in theory it can be cheap, maybe a grand for a Crown Graphic, dusty D2 or 45M and some taco sessions with your favorite developing tank if you are just a hobby dabbler....but I am very serious about it and between the camera, 7 lenses, 30 film holders, two 6x12 roll film backs, a mint Rodagon 150mm F/4 Apo-N, about 3,000 sheets of 4x5 film and a few other goodies, I am at over $16K for LF in tax year 2012...:-O
On the other hand I did make a slick magnetic 20x24 easel for $50 and a jumbo rotary drum for 30x40 for about the same...
So I guess it can be cheap but as in most cases, you tend to get what you pay for....

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