get friendly with a machinist, or take the unit to a machine place, they shouldn't charge that much to turn the unit into a normal bearing housing.
When the bearing inside my crown fan idler died it was a PITA to fix. Reason being that the webbed housing forms a cassette with the shaft and therefore has to be replaced as a unit.
The solution was simple.
Press the outer race through the housing.
Take an angle grinder to the casette housing and break the shaft free.
Find some bearings that will handle the load of the shaft and have suitable sealing ie a high speed seal.
Stick the shaft in the lathe and machine it down to the inside diameter required to get the bearings on.
Press the bearings on to the shaft and press the lot into the housing.
IF there is another bearing failure its as simple as pressing a bearing out and putting a new one in.
No $600 expense for a whole new housing.