I would not recommend purchasing bearings from anyone other than a reputable source, such as the original manufacturer. Contact them and find out who their distributors are.
Counterfeit bearings have been a growing problem in recent years, especially in the aftermarket. There are many Chinese knock-offs that will even mark the bearings with the OEM name on them and produce OEM packaging. There is no way of telling the difference unless the components are measured and the metallurgy is checked. Tolerances are measured in microns so a set of calipers won't cut it.
Here's a link to one source, Timken also has a number to contact. In the past, they've been helpful in supplying information such as shaft and housing tolerances to determine wear, etc.
Remember, the cost may be a little higher but you get what you pay for .....
Schaeffler Group USA Inc. | Hub and Wheel Bearing Catalog