I think that has been said many times. The OEMs are Koyo. Certainly as far as we have all found. Difficult on a truck of this age as someone could have changed them before. Koyo bearings are Koyo bearings regardless of their source. Like buying a Nokia phone. Doesn't matter who sells it, it comes from Nokia. Milner do very good prices on them, but unless you go to counter you CANNOT guarantee that they will have Koyo in stock and they may send you something else. I have been doing this stuff for years and I don't think I have ever really come across bad bearings. Bad seals yes, rubbish wipers definitely, bulbs that last 10 mins,oh yes. But bad bearings such as the ones we're talking about? Not that I have found. Landcruiserparts is our very own Karl and we have all done business with him and will continue to do so. I bought the BEBs from Karl. I wouldn't do that from just anyone.
If you go to a bearing stockist, or a steel stockist or a PPE stockist you will be staggered at what people are charging. I saw a pair of gardening gloves in Tesco this week at £12.95. If I go to my local place, they'd probably give them to me if I only wanted one pair. Not worth ringing them through the till. Same with bearings. £61 from Toyota does not mean they are special bearings.
Best of luck.
Chris