chax37, like so many others have wondered, it's because of the price multiplier. All the things have their base price but for each upgrade, that price is affected by their respective multiplier. Like ChaoticBrain, JeranTek, jessupar and countless others, certainly, have pointed out the lemonade stands are multiplied by 1.07 with each purchase. The Newspapers by 1.15, carwash by 1.14 and so on, down to the oil companies, which is again 1.07. Thus the most expensive item shifts as you buy more. Please save yourself the trouble (or dare I say embarrasment?) another time and read through the highest rated comments.
Or better yet, make each button dark grey, adding a little more light gray from the buttom up, like if I can afford 4/10, 40% of the button would be light grey and the rest dark grey. If you think about implementing bigger mass buy options, like 50 at a time, it will become hard to tell when you can afford all 50, so perhaps make the buttons green, like the active mass buy option, when it's fully affordable. Makes sense? I'll send a crude image of my idea if you PM me about it :)
Make it a checkbox option, to enable buying less than 10 if that's what I can afford. And put the checkbox/switch button somewhere very accessible, like next to the two buttons up there. A setting would work too, but I think people would miss it.
As a cosmetic thing, could you add one second to the clocks? When I view my 200 studios, I see 5 seconds remaining. It actually takes 7 to complete, cause I see all of second 5 (let's assume it starts at 5.99) and behind "almost done!" there's the full 0 second, too. I can see how it makes sense to do it like that, but it'd be more "true" if I see it should take 6 seconds to complete and it actually would take 6 seconds :)
Sooooo I need like 50 quadrillion for that next awesome upgrade, uhm, can I get an SMS, app alert, whatever when I have enough money? :D ETA so I can set an alarm? :P
Can someone explain what's great about this game? I don't really get it. All I see is a slingshot with a few upgrades. Would I be correct in my assumption that that's all there is to it?
That's the hardest easy badge I've ever come across. Being clumsy as I am, some of the hard badges are easier than this.. I'll go as far as to say it levels with one or two of the impossible badges. That's how I feel about it anyway.
Oh no! What did you do! Now I'll surely get in trouble at work.. CW ftw! It's like cake. You really try not to and once you start eating that delicious cake you can't stop again..
Uhm.. The pickup started with its wheels below the surface, so I got to 254 before the game thought I'd ran out of whatever.. This is with a pickup that went almost half way the day before. Nice.
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Thanks for the suggestion - we'd like to polish all of these little details for sure, so it helps hearing about them.