Hehehe... you should try going to a casino and gambling some time. ;)

300k silver isn't very much at all really. In fact, even 3 mil isn't that much either. With a 6 star piece of equipment, it takes on average 300k to get it to level 12. However, I have had it as low as 110k before and as high as 2 million to get it to level 12 too. I think my record for leveling up 1 piece of equipment from 1-16 was 11.2 million. That wasn't even an accessory either so it could have been worst. On average I think it costs me about 2 million silver per equipment to go from 1 to 16. I think my lowest was around 500k. It's been awhile and I'm not sure if I've gone below that before.