I don't know if this is a bug, or bad game play. When I prestige, I of course have to buy the toasters again, because everything is supposed to be reset. However, when I did my first prestige, the levels were not reset. I still had max speed of 5 and level 10 on my first toaster. Subsequent toasters were the same as per-prestige. I assume they should have been reset to 1??? Either way, upgrading the Value did not take it up to the correct level. It only took it from the base price up one level, so now I am getting level 2 value and level 1 speed with no way to max speed again and a huge cost to upgrade. With a level cap of 20, I would shortly run out of upgrades to keep playing.
 "Idle Toasters"){kind=icon}
This should be fixed now. Thanks for pointing it out