I've ordered some bearings for my mendel, 624 and 608. I've found a seller that looks some what reputable on aliexpress.
I'm getting the minimum quantaties of each, which are 200, so I will have a lot left over, I'm happy to ship them to you at cost which should be around 45c/bearing for 624 and 608 + postage. Pick up is fine too, I live near northcross.
I'd also be keen for a trade, I'm looking for part to build a hotend.
The bearings should land in 2 weeks but might take up to 3.