Michell sells bearing oil. It runs $15 here in the US. I'm sure it is cheaper where you live. You can also do a search - someone, somewhere mentioned the oil weight. If that is to be believed, you may be able to save more $.
IIRC you should fill the well to withing 2mm of the top of the well - but confirm this point.
Also, put a little oil on the top of the shaft so there is some lubrication when you start the platter spinning. Though the shaft is self lubricating, you definitely want some bearing oil on the shaft to start with.
Something key - make sure the ball bearing is where it should be, they can fall out when the unit is disassembled.