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Auto hubs are expensive unless you buy them used. Check the for sale area on here. I'll have a set for sale sometime in the next few months (cheap, they have 250k miles and I've abused them off road, but they still work perfect) but that doesn't help you now.
Won't help him anyway. I think the D-35 hubs you are getting rid of and the D-28 hubs he needs are different.