Hmm my calculator must have had some internal error/malfuntion 
XCcrev- 895
EDIT: You dont need to know 
learner-100
kh shin pads-60
k1-490
shipping-~50 total
$700
Does traveling to Unicon (and other events) count? If so, even I don’t want to know. $30,000 is probably a way-low estimate… 
Upgraded nimbus ISIS trials - $900
Second hand KH 04 muni + upgrades to it - $400
Pads - $80
New shoes because unicycling wrecked my old ones - $120
New Jeans because I like riding in them - $80
BC plates - $70
BMX front wheel - $50
Replacing broken parts, shipping, random other costs etc. - $50
Total - $1750, wow I didn’t expect it to be that much . It’s worth it though. And my parents probably paid about $750 of the above costs so thanks to them.
Try searching first. This is what I got using your title.
Some threads that have already been posted on this:
http://www.unicyclist.com/forums/showthread.php?t=59167&highlight=How+much+have+you+spent+on+unicycling%3F
http://www.unicyclist.com/forums/showthread.php?t=29846&highlight=How+much+have+you+spent+on+unicycling%3F
There was another one (that I posted my expenditures in) but I didn’t see it in that search.
And similar:
http://www.unicyclist.com/forums/showthread.php?t=51504&highlight=How+much+have+you+spent+on+unicycling%3F
probably about 4,000$ total.
a lot of it on trips.
Into the thousands, most of it on trips, but quite a bit on various parts.
Unicon was so well worth it though 
Not much on unicycles (I gues like 1500€ but in 12 years). But I dont want to know how much in traveling. Since the last 2-3 year I didnt spent money on unicycling I got a little from it sponsors and show riding is great.
KH 20 07- $650.0
Multiwheeler stuff- $450
Magazines- $25
I would say close to $4k if not more.
In correct order from 1st unicycle to last unicycle.
1) Skateboard unicycle (Prototype) = $200
2) Learner machine = $80
3) Torker TX = $250
4) Project unicycles = $1.5k in total. Maybe more.
5) Coker = $900 for coker and another $500 for modding it.
6) Motorized unicycle for my disabled friend = $1k
Everything 
Way too much 
But its worth every bit.
Spent on Unicycling
Bellow is my expenditures for the last 2 1/2 years.Keep in mind that my prices include shipping to Israel and 15.5 VAT tax.
Learner Unicycle $70
Onza 24 $580
KH24 2007 $680
KH29 2005 $640
KH20 2007 $406.5
Pedals $200
Tires $100
Guards $70
FLUCK trip $1000
Gas on MUni
destinations $500
Various toos
and gloves
and accessories $300
Hospitol bills
and missed work
because of broken
Leg Priceless
Unicorn
This thread is an extremely bad idea. Addicts usually hide the trail of destruction they leave in their wake. Besides, by not totaling the expenses, I can stay in denial for a longer time. I will not post my total expenses for fear of the information falling into my wife’s hands. However, I have never regretted my unicycle extravagances - only my economies.
Two or three thousand United States Dollars probably, over the course of 30 years now.
Went through lots of parts on the original Giraffe I had.
And two new uni’s bought this past year or two.
How much have you MADE unicycling??
Easily over a million dollars, no joke.
(and I have nothing to show for it but some unicycles)
All of those threads are over a year old. I wasn’t looking for some specific fact or nugget of information otherwise I would have used the search function. Its just interesting to see how much the community spends on the sport when you add it up.
3,000 or more… kinda lost track a while ago.
money spent
torker cx: $84.00
QU-AX MUni: $300.00
nimbus trials: $250.00
another hundered on padding, and gear
over-all $724.00
2007 Onza trials= $470
Qu-ax Cromo cranks= $87
Try-All Tire= $60
Pads= $25
50/50 pedals= $60
Grind Plate=$15
Total= $717
Big thanks to my Dad because he payed for almost half of my stuff.
I dont really like to think of how much ive spent lol.Probably over $3000