What will replace the quality of the discontinued Shimano BB-UN55?

[Fastpedaller]

Very cheap - well done - Brand says 'Gokoti'.
"Exquisite design, two sides metal sealed ball bearing, with good dustproof effect. "
How do reputable firms manage to sell this spec bearing for £10 each? Or maybe one has to pay more for the 2RS - but does one need seals like that in bottom bracket?
Do people really care about the assured provenance of quality bearings?
https://bearing-king.co.uk/products/163110-2rs-zen-sealed-deep-groove-ball-bearing-16x31x10mm
https://www.bearingboys.co.uk/Dunlo...oove-Ball-Bearing-16mm-x-31mm-x-10mm-522884-p
https://bearing-king.co.uk/products...aring-16mm-inside-x-31mm-outside-x-10mm-wide/
https://www.airevelobearings.com/product/mr163110-2rs-steel-bearing/

look to be the same thing (Amazon are 2rs (2 rubber seals), but 1/10 of the price of others.

 

[Fastpedaller]

Very cheap - well done - Brand says 'Gokoti'.
"Exquisite design, two sides metal sealed ball bearing, with good dustproof effect. "
How do reputable firms manage to sell this spec bearing for £10 each? Or maybe one has to pay more for the 2RS - but does one need seals like that in bottom bracket?
Do people really care about the assured provenance of quality bearings?
https://bearing-king.co.uk/products/163110-2rs-zen-sealed-deep-groove-ball-bearing-16x31x10mm
https://www.bearingboys.co.uk/Dunlo...oove-Ball-Bearing-16mm-x-31mm-x-10mm-522884-p
https://bearing-king.co.uk/products...aring-16mm-inside-x-31mm-outside-x-10mm-wide/
https://www.airevelobearings.com/product/mr163110-2rs-steel-bearing/

2 differing prices for the same product from Bearing King?