Not long after i leveled to 90, i also leveled my engineering and made me a Bingtron 4000. It was really expensive to make,, but hoped to get some of his infinite wealth in return. So far i got an average of 10 gold a day, so guess it will take me about a year to break even. Only thing other then useless crap i got so far, is the +profession skill which i ofc don't need.
The only people who seem to benefit from Bling's wealth are the random people even without engineering who can just get extra gold or loot for free and have the same chance at something nice as people who spend on Bling. TBH it seems really unfair and i would like to suggest, that if you own a Bling you at least have a +10% for something good to drop, since you did the work and spend on it.
I realise the drop chance in general has been upped, but still think owners should benefit more.